Information about Adventure Fitness Athletic Club

Grant St 12301
80241, Thornton
+1 303-920-2030

Opening hours

  • Monday: 5:00 AM – 8:00 PM
  • Tuesday: 5:00 AM – 8:00 PM
  • Wednesday: 5:00 AM – 8:00 PM
  • Thursday: 5:00 AM – 8:00 PM
  • Friday: 5:00 AM – 8:00 PM
  • Saturday: 8:00 AM – 2:00 PM
  • Sunday: Closed

Come to Thornton's best gym for top-quality equipment, Cryotherapy, hydromassage, classes, personal training, rock climbing, Power Plate, and a welcoming atmosphere!

Come check out Adventure Fitness Athletic Club, a locally owned and operated gym in Thornton, Colorado! We offer a wide range of equipment, specialty services, classes, and other amenities that you won't find at other gyms in the area. Come see us today and see all that we have to offer!

At our gym, you can enjoy unique services like Cryotherapy, hydro-massage, bariatric support, body composition testing, Power Plate, CrossCore, Nordic Walk classes, and an expansive climbing cave. Our experienced, certified trainers are always available to help you customize a fitness program that's right for you.

The gym offers a wide range of free weights and weight training machines, including dumbbells (5-100 lbs.), kettlebells, powerlifting, full cages, a full jungle gym, cable machines, and stacked weight machines. You can also find machines for leg press, hack squat, shoulder press, chest press, triceps, and biceps at the gym.

The types of cardio equipment at the gym include treadmills, upright bikes, recumbent bikes, ellipticals, VersaClimbers, Helix machines, spin bikes, Airdyne bikes, and stepper machines.

The equipment at this gym is both fun and challenging, including the Versa Pulley, VIPRs, Jacob's Ladder, Ab Coasters, Traverse Machines, Assisted Pull-up and Dip Machine, cargo net, and boxing equipment.

We offer free classes for our gym members including Yoga, Fit Soldiers 2.0, Boot Camp, Functional Fitness, Circuit Training, Strength and Conditioning, Dance Fitness, TRX, Spin, Body Sculpt, Total Body Conditioning, POP Pilates, PickleBall, Kickboxing, and Meditation.

We understand that safety is a top priority for our members and staff during this uncertain time. We are taking extra steps to ensure that we are doing our part to keep our gym community safe.

Our mission at Adventure Fitness Athletic Club is to help members, the community (near and far), and staff achieve a healthy and happy lifestyle both physically and mentally in a unique, safe, fun, comfortable, welcoming, and encouraging environment.

What are some of the most frequently asked questions at Adventure Fitness Athletic Club? If you have additional questions, please contact our team for assistance by calling 303.920.2030 or emailing [email protected].

The Adventure Fitness Athletic Club is located at 12301 Grant St. #210 in Thornton, Colorado. We serve the north Denver region, including Westminster, Thornton, Broomfield, Brighton, Arvada, and many of the other local areas. You can view a map of our location on our Contact page or by scrolling down to the bottom of this page.

The AFAC gym is committed to helping every member achieve their fitness goals in a friendly, supportive environment where everyone is treated with respect, regardless of their ability. The gym offers unique fitness experiences that you won’t find at other gyms, like cryotherapy, group fitness classes, a climbing cave, and a climbing wall.

Do you offer fitness classes at the AFAC gym? Yes, we offer a variety of fitness classes at our gym, including yoga, spin, barre, Pilates, kickboxing, power plate, boot camp, dance fitness, and tabata. You can view our class schedule and sign up for classes on our website. Non-members can participate in our classes for a fee of $10 per class.

At Adventure Fitness, we offer a variety of fitness programs that can be customized to your individual needs. Our personal trainers are always available to help you create a fitness plan that fits your unique goals.

The gym is excited to offer individual whole-body cryotherapy sessions to members. During cryotherapy, the body is enclosed in a chamber from the neck down. The cryotherapy session, which lasts about 3 minutes, begins with liquid nitrogen being pumped into the chamber. As the nitrogen hits the air, it turns into a harmless vapor and drops the temperature inside the chamber to between -238°F and -274°F.

Do you want to have a bigger, stronger chest? Well-developed chest muscles are a hallmark of weightlifters who’ve spent many hours at the gym, training hard. They’re also a sign of someone who’s been training smart. Whether you’re doing bodyweight exercises like pushups or bench-pressing hundreds of pounds, make sure your chest workouts are giving you the results you’re after. Read this blog to learn more about the best chest workouts to do at our Thornton gym.

The shoulders are some of the hardest working joints in our bodies, which is why shoulder pain is something that affects 18-26% of adults at any given time. Having weak or painful shoulders can really hold back your progress at the gym, because your shoulders are involved in training your arms, back, core, and even your lower body. Plus, who doesn't love having strong, developed shoulder muscles? That's why it's worth investing your time in exercises that will build your shoulder strength and stability.

One way to improve the condition of your shoulders is to do cable Y raises as part of your gym workout. This blog will explain the benefits of this exercise and how to do it at our Thornton gym.

If you're a member of AFAC gym, you can take these classes for free. If you're not a member, you can still join us by paying a $10 drop-in fee. Nick, a professional MMA fighter with years of experience, will be teaching the classes. The classes are open to all levels, so even if you've never done an MMA workout before, you're welcome to join us and learn.

This blog is about Nick, his new class at our Thornton gym, and the benefits of mixed martial arts training.

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Adventure Fitness Athletic Club: Opinions

5/5 (51 Opinions)
Top Rated Gym
Jaco Cronje 1 year ago

Fantastic experience: Every possible machine you can think of, friendly staff, nice vibe from athletes in the gym. The equipment is a bit squeezed together but not impractical, inconvenient or dangerous.

Samantha Concha 1 year ago

Fantastic experience: I can't say enough positive things about this gym! The entire staff is super lovely and they have more than enough pieces of gym equipment to get an incredible workout in. Not to mention the great variety of group glasses they offer as well! My favorite has been the kickboxing class they offer, but there is something for everyone. I've recommended this gym to various friends already and would continue to do so :) Thanks to Adventure Fitness Athletic Club for being so great!

Becky Konjevod 1 year ago

Fantastic experience: The cryotherapy at this gym has been a life saver! More accurately a knee saver. I notice when I wait too long between sessions. The staff is wonderful and I feel very safe. Don’t miss!

MJ K 1 year ago

Fantastic experience: I have been going for Cryotherapy for a few months now and I have found it super helpful. The staff is great and always super welcoming. I highly recommend!

Colton Smith 1 year ago

Fantastic experience: AFAC! I travel around the US every week for work, and AFAC is hands down the absolute BEST! From the amazing staff to all the versatile equipment, rock climbing, punching bags, ropes, sled. This is a ALL in one gym!

Russell Mann 1 year ago

Fantastic experience: I might consider myself a novice gym expert. As a traveling housesitter this summer we have had so many short term gym memberships I cant count them all. This is a great aspect of seeking out locally owned gyms or certain franchises; flexibility in membership. Adventure Fitness fits this bill to a perfect T! Dont fall for the $10.00 a month non-commital sea of purple when you want to take your body seriously. Find a gym like Adventure Fitness and here's why: Susan the owner treats you like family and is flexible in offering us a short term membership rather than expensive day use passes. Find a gym like Adventure Fitness that is so clean you could eat off the floor. Adventure Fitness has 100% plus of every type of equipment any gym goer desires. Adventure Fitness gets an A+ in my book, and I envy the people in Thornton who can go here all of the time. Adventure Fitness has so many workout areas we can spend a month in there and probably never get to use everything available. There is a personal touch here you are not going to find at any other gyms, from delicous waters, hydromassage, cryotherapy, classes, good music, ameneties, shower, and so much more. Find a gym like Adventure Fitness that isnt overcrowded and stuffy. Did I mention Susan the owner creating a gym that becomes family? Get a membership now, and use it. Support your local gym and spread the word.

Sarah Beebe 1 year ago

Fantastic experience: AFAC not only has top of the line equipment, but top tier staff as well! When I visited, I truly felt like I was their top priority and I had access to more fitness equipment and opportunities than I’ve seen at any other gym. The owner Susan was very friendly and helpful, and Jamie’s dance fitness class was the perfect blend of cardio, strength training, and fun.

Clara Taylor 1 year ago

Fantastic experience: The staff is very helpful, friendly and treats you like family. Love my gym!!

Hannah Ahr 1 year ago

Fantastic experience: I absolutely loved my time at AFAC! Susan, the owner, was super welcoming and so nice! And I had such a fun time taking Jamie’s group fitness class and enjoyed using the wide variety of equipment!

S Purdy 1 year ago

Fantastic experience: Went specifically for Cyrotheraphy for fibromyalgia. Very personable staff, first place I've been to where they monitored my temperature and heart rate. I would definitely go back again. I love that I wasn't local and a membership wasn't required because traveling can cause me a lot of pain. They were everything I needed and so much more! Plus offered me a water at the end. Thank you!

Deanna Winbush 1 year ago

Fantastic experience: The instructors are great and the workouts are engaging and appropriately challenging, but there are always modifications to optimize at every fitness level.

Jaime Errichiello 1 year ago

Fantastic experience: Mike was so great doing the cryotherapy for my daughter and her teammate. In town from NJ for softball and he treated them so well and gave great advice. We will be back next year for sure when back in town.

Tove Knox 1 year ago

Fantastic experience: AFAC is an absolute 5x gym with 5x customer service. The equipment and opportunity to better your health is all in this gym! There are multiple classes and times to make your schedule work. Trainers/Coaches are professional, knowledgeable, and will help you accomplish your goals! I will be referring all my family & friends to Adventure Fitness Athletic Club.

AL Bacon 1 year ago

Fantastic experience: Hidden gem! This gym has it ALL! Whatever your fitness level, preference, goals, this gym will meet your needs! Aerobic, CrossFit, free weights, machines, cardio, climbing wall, even a HydroMassage room! The absolute best gym I’ve ever experienced! Owners were warm & welcoming to give me a tour, knowing I was just in town for the day. Cannot wait to come back for another 3-hour visit!

Lisa Mattivi 1 year ago

Fantastic experience: I have recently joined this gym and all I have been thinking is why did I not join sooner. This gym is amazing! The owner, Sue is just a gem of a person and the gym itself is top notch. They have everything you could possibly need and then some. The space very clean and organized and I am so grateful to have found them.

Melanie Lovato 2 years ago

Fantastic experience: So many good things to say about AFAC. Definitely one of Thornton's best kept secrets. For one. This gym is so well-kept and very clean and sanitary. The staff is very helpful, friendly and treats you like family. So many different varieties of workout classes available. And literally every piece of equipment you can think of. Thank you Susan and Mike for all that you do! Love my gym!!

Chris Teague 2 years ago

Fantastic experience: I’ve been a member for about 2 months and have been so impressed with this health club. The staff are friendly and are meticulous with cleaning and disinfecting the equipment. The equipment is some of the best I’ve seen, and is well maintained. There is no “ego” at this club and every member I’ve met is friendly and encouraging. The owner, Susan, is so friendly and makes everyone feel welcomed. I highly recommend it!

Gabbie Novak 2 years ago

Fantastic experience: This gym is incredible! The owner Susan is so kind and welcoming. The equipment is remarkable! I am not an avid gym goer however this gym makes me feel comfortable and my body has adventure fitness to thank!

Jasmine Ferguson 2 years ago

Fantastic experience: Love the classes and trainers. There are lots of exercise options depending on interests and experience. Everyone is personable and helpful! I highly recommend this location if you’re looking to enhance your workout regimen.

Joe Lights 2 years ago

Fantastic experience: The kindest people and the most amazing equipment. A quiet and calming place to find your fitness goals. I'm excited to be a new patron on this journey with Adventure Fitness as my partner. This one photo attached doesn't do justice to the amount of equipment they have in their many areas. Check them out!

Sarah Rohrback 2 years ago

Fantastic experience: So incredibly happy to have found this gym. AFAC is a wonderful facility. They have tons of equipment, classes, and other amenities. I have always felt comfortable at the gym, never have had to wait for equipment, and feel so welcomed by Susan and Mike. Highly recommended if you are looking for a new gym- AFAC is far better than any large corporate owned gym.

Scott Brungardt 2 years ago

Fantastic experience: Positive: Professionalism , Quality I love this gym. Wonderful cardio, free weights, TS machines, and mixed use areas. The owner (Susan) and manager (Mike) are there everyday, and are always welcoming, friendly, and helpful. The equipment really is top-notch, and I never have to wait to use any machine due to overcrowding. I highly recommend checking out AFAC!

H Weiland 2 years ago

Fantastic experience: I've been going to this gym for a good while now and I absolutely love it! Everyone is really nice and there is such a diverse array of equipment that im never bored! They are constantly updating equipment and everything runs well and is super clean! The trainers are incredible and Susan is amazing, she's been a big support to me. I love this gym and would highly recommend it!

Amy Wieser 2 years ago

Fantastic experience: Absolutely love this gym! Cleanest gym you will find around, and best maintained! They are always keeping things up to date and adding new equipment as well. Some of which is really unique too. The owner Susan and the manager Mike are super friendly and really makes sure everyone is happy here! This isn’t the typical “gym”. When you come to AFAC you are treated like family!

Robb Hickey 2 years ago

Fantastic experience: AFAC is a superb and intimate location for meeting your fitness goals! I swear you can eat off the floor it’s always so clean. All of their equipment is TOP of the line. If you belong to one of the big box gyms, you are missing out on a truly excellent athletic and fitness experience. I’ve been a member here for 4 years and can say nothing less than exceptional things about the facility and the owners. It’s all good!

Jennifer Do 2 years ago

Fantastic experience: Hidden Gem! This is the first gym that I’ve gone to where I feel the most comfortable. I’m used to gyms that are wayy too crowded that I feel too intimidated but not this gym! The gym literally has everything you need (even equipment I’ve never seen before) and is very well kept. I never have to wait to use any equipment. Susan and Mike are super friendly as well! This is by far the best gym. Highly recommended!!

Cody Case 2 years ago

Fantastic experience: This place is really a top notch place to workout! The ownership and staff are absolutely amazing...they are always extremely kind and welcoming, and willing to help with any questions I have regarding anything. They consistently maintain a very clean and safe environment and I do very much appreciate that. They have a wide range of equipment that is spaced out very nicely that promotes a great flow for a great workout. They offer a very nice class schedule with wonderful trainers that can be easily signed up for through the Mindbody app. I have worked out at many gyms and I feel this is one of the best! In addition, they offer cryotherapy, have a massage bed, powerplates, and equipment to help restore the body. For anyone looking to start or enhance their fitness journey, I would highly recommend Adventure Fitness Athletic Club

Antonia Hanlon 2 years ago

Fantastic experience: I just moved to Thornton and joined this gym. I went in to check this gym out and joined the same day. The people are very nice and I’ve never felt more welcome at a gym! They also have every piece of equipment you could think of! Including cryotherapy and tons of fitness classes! I have been loving it!

A Google User 2 years ago

Fantastic experience: This is the best gym I have ever set foot in. It is super clean with every piece of equipment you can imagine. I have never had to wait for a machine. It offers a large variety of classes led by trainers who have all been friendly, professional, and fantastic at what they do. Other gym members have been welcoming and encouraging. Not a single person has made me feel intimidated to try new classes or machines. The owner and general manager are extremely friendly and communicative. I cannot say enough how much I have enjoyed this gym and how helpful it has been to me as I try to regain my health after a pregnancy and injury.

Jay Hinkle - LOT 2 years ago

Fantastic experience: Positive: Quality Best gym in the area. Many classes, great trainers, and they have pretty much everything, equipment wise. Never too crowded. The owner and manager really take care of the place. It’s always clean and the equipment is repaired immediately.

Shannon Dobyns 2 years ago

Fantastic experience: My partner and I have been in the fitness industry for 16 years between the two of us. We are both bodybuilders and I am training for my pro card. We have been apart of many gyms and this is by far my most favorite gym! The optimize the space they have very well. They have everything from great machines, a rock wall, a separate room with mirrors, free weights, cardio. They have so many fun things to explore. Susan and Mike the co-workers are both very kind, welcoming and knowledgeable in their own expertise. They have great attention to detail and keep their gym very clean which we appreciate. They have many classes available as well. We would recommend this gym to any one at any level of fitness. Exceptional gym, great environment with a small community feel!

Laine Pettit 2 years ago

Fantastic experience: If you are looking for a gym that feels like family, this place is it. Owners are very kind and informative. Tons of equipment and classes to choose from. Even a rock wall for climbers! It's seriously the best of everything you need in a gym. My wife and I are so happy we found this little gem in Thornton.

Paxton VanWanseele 2 years ago

Fantastic experience: I've joined several gyms over the years and none of them compare to AFAC in terms of quality, cleanliness, and all around friendliness. The staff is absolutely fantastic and the environment is beyond comfortable. This is absolutely the best gym around.

Jill Houghland 2 years ago

Fantastic experience: I've been coming to Adventure Fitness Athletic Club specifically for cryotherapy for the past three months. The location is great for me and though I don't use anything else at the moment, the facility is fantastic. Clean, well laid out and so much to offer! If you're looking for something specific or a gym that can meet any of your needs, this is the club for you. I've worked exclusively with Susan and Mike. Both are extremely pleasant, knowledgeable and fun to be around. If you haven't tried cryotherapy yet, do it! It aids in recovery after a workout and provides an overall reduction of aches, pains and inflammation. Seriously try it, you'll sleep better and have more energy.

Brian Do 2 years ago

Fantastic experience: I've been a member since April and this is my favorite gym. Susan and Mike are great and the atmosphere is very welcoming with a friendly local-vibe. The equipment is well updated and the gym itself is very clean with everything you need. All the members that I've run into are respectful as well. This place is a gem :)

Zachary Witt 2 years ago

Fantastic experience: ☆<6th star.. As a LMT, CPT, KBC & health coach/bikini coach. Plus 12 years of trying every gym you can think of. This is the type of gym you want to tell everyone about but nobody at the same time. From the moment I stepped into this gym, I knew it was going to be a great experience. Got a tour from the owners Mike & Susan. Susan gave us a great tour, they have every Bell & whistle you need or might even want to try!! You can tell between Mike & Susan they care about their gym & community. First, for seeing them everyday, Susan's exceptional drive to have her gym up to such a standard. It's refreshing. Mike has a equipment company giving him superior knowledge on machines & quality, as well as being able to fix or replace them faster then other gyms.... 3 months later. He even asked what do we like & what we'd change. I can say as long as this gym is here, I will not go to another.

Angela Lindow 2 years ago

Fantastic experience: This is *the best* gym around with an amazing variety of classes! It is always super duper clean, and the staff is always super duper friendly. They have updated, nice equipment, but seriously, take advantage of all the fun classes.

Jeanna Costa 2 years ago

Fantastic experience: This place is a hidden gem! Clean, top of the line equipment and friendly staff. I have been coming for 6 years and love it!

Lisa Sorenson 3 years ago

Fantastic experience: Positive: Communication , Professionalism , Quality I am so happy to have found this gym! They have a great variety of classes, the trainers and owner are awesome. Everyone is very friendly. Very very clean environment with huge amount of state of the art equipment. I highly recommend checking it out!

Julee Hubachek 3 years ago

Fantastic experience: This gym is a gem! It has a huge variety of equipment, an extensive list of classes to choose from, trainers that are helpful, encouraging and know what they are doing. It is also spotlessly clean. Whether you have worked out all your life or are new to a gym, Adventure Fitness Athletic Club can help you achieve your fitness goals!

Mark McNabb 3 years ago

Fantastic experience: This gym is amazing!!! I love it here. The staff is very friendly and the facility is always clean. Their workout equipment is all really new, they have almost every machine you could think of to get any workout done. Fantastic place!!!

melanie atencio 3 years ago

Fantastic experience: I am so glad I found this gym! I love all the trainers they have. They are knowledgeable, fun, and caring. This gym is very clean, has all the equipment you need for a great workout, and best of all it’s a fun environment to workout in!

Lois McNabb 3 years ago

Fantastic experience: This gem of a gym is by far the best. They offer an array of classes. They have state of the art exercise equipment and an amazing climbing wall. You will not find a cleaner gym! Susan the owner and Mike the Manager are wonderful to work with. Jamie is one of the instructors who has been there for a while and she is amazing! STOP BY and CHECK THEM OUT!

devin medina 3 years ago

Fantastic experience: Positive: Communication , Professionalism , Quality I always have such an incredible experience at this gym. Always wonderful, welcoming staff. This gym includes every workout tool you need for any type of fitness oriented individual. The classes are amazing as well. If you’re looking for a new gym to start a membership, look no further.

Melinda Hicks 3 years ago

Fantastic experience: THE BEST QUALITY GYM!! This is one of the nicest gyms I’ve ever been too. All the equipment is brand new and they have unique services like cryotherapy. There’s all kinds of fun classes to try like yoga, Boot Camp, and kickboxing. The instructors are lovely and push you (but also let you go at your own pace. The managers here are the best people. Susan and Mike always greet me with a happy smile and strike up a conversation whenever I walk through the door. The whole team for this gym is very down-to-earth. It feels calming to be here. They keep this gym EXTREMELY clean. It’s always being wiped down and every 2 weeks they do a major, major deep clean. There’s sanitizer bottles and wipes all over the place and they emphasize the importance of wiping things down. I’ve been coming here for a few months and this is the best gym you can find. Check it out sometime!

Melissa Thomas 3 years ago

Fantastic experience: Adventure Fitness Athletic Club is the best gym in Thornton by far. Their calendar is packed with classes to keep workouts fun and interesting and all the trainers are knowledgeable and kind. The gym is always immaculate and has every type of equipment you could ever want or need so there’s no waiting. They even have cryotherapy, which has really helped me a lot. The owner, Susan, is a sweetheart. She’s always available to assist you and is passionate about helping you get the most out of your workouts. You just won’t find that type of personal attention at any other gym. They treat you like family.

Bobby Ortega - LEH Faculty 4 years ago

Fantastic experience: Have been a member for just over a week now and our family LOVES it! They have a variety of classes that meet all fitness levels no matter the class. The facilities are state of the art and very clean with a wide variety of equipment. The staff has been nothing short of amazing and the instructors have been a great support in all of the classes that we have taken. Would highly recommend Adventure Fitness to anyone!

Patty Wooters 4 years ago

Fantastic experience: Adventure fitness is the BEST! I have never felt comfortable at a gym like I do here. The staff is very friendly and inviting... it is always very clean and well maintained. Susan is wonderful, she has clearly poured her heart and soul into this gym. It shows!

Scott Shelton 4 years ago

Fantastic experience: Great place to workout. Been going here for three years. Very casual atmosphere, clean always functioning equipment. Good variety of equipment and enough of each type to handle the demand without a wait. Susan and the staff are great. If you want a low key gym with a comfortable hassle free environment, this gym is for you.

Lisa Craig 5 years ago

Fantastic experience: Every week I look forward to Chuna’s yoga class on Tuesday and Thursday. truly the best Yoga class I have ever had. She knows about the anatomy and how to relieve areas where you feel pain. I am so grateful to her. If you want to try her class let me know. . . . #yoga #fitness #adventurefitness #bestyogaever

Dustin Schmidt 7 years ago

Fantastic experience: I've recently begun working out at Adventure Fitness Athletic Club and I absolutely love it! They have a group of great employees and personal trainers who all seem genuinely dedicated to helping me and every other member succeed in their fitness goals, whatever they may be. The equipment is all state of the art, all the classes I've been to have been small and intimate with awesome instructors, and my personal training sessions are getting me back in the fitness groove really quickly. I've never been excited walking into a gym, but I can say that's changing since becoming a member here.

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