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Open 24 hours
4770 Pearl St STE A, Boulder
Gyms
6AM - 7PM
3161 Walnut St, Boulder
Gyms
“Everything about this gym is special - the classes, instructors, staff, and studio are all absolutely amazing. I could not recommend a gym more. Kondition has provided me an amazing community that I love so dearly and reignited my passion for fitness. THE BEST!!!”
“Congratulations to CrossFit Roots on 17 years!
I've been a member for over three years now, and it has genuinely changed my life. The persistent back and knee pain I dealt with for years is virtually gone, and I'm stronger than I've ever been.
I still remember my first day walking into Roots. I was incredibly intimidated, and many of the movements seemed impossible. But with great coaching, patience, and consistency, I've learned, developed, and accomplished things I never thought I could.
Most importantly, this gym is truly for everyone. Every age, every fitness level, and every body type. The coaches meet you where you are and help you become a better version of yourself.
I'm incredibly grateful to be part of this community.
Congratulations on 17 years, and thank you for the positive impact you've had on my life.”
6AM - 7PM
2546 Spruce St, Boulder
Gyms
“I love love love this pilates studio. The instructors, music, vibe, class variety (cardio, pilates, and combo!) are all wonderful! I look forward to these classes every time. The studio is always clean, they have a shower and towels and snacks/drinks for purchase. They've really thought of everything for creating an amazing space forMy one issue is the stringent policies and archaic way of booking/lack of rollover and limited flexibility around it makes it really difficult to understand how many classes you've paid for and when you can book out (I think it is 2 weeks out), to the point that I've dropped my membership due to work travel and inability to come as consistently. I say archaic because you dont have access to see on the Mecha Studio app what classes you have leftover, but need to use the mindbody app instead. The mindbody app isn't great (and this isn't mechas fault!) but needing to use two apps to be on top of rollover is another step and leads to confusion and frustration when, at the end of june, you're sitting on classes you paid for but aren't able to use.They roll over classes up until June and then again December, which is definitely more than some of the other local studios. Anything you still have left you aren't able to use up (aka, lose it) What is bothersome is are not able to see this on the mecha app, but instead need to go into the mind body app to have an idea of whats still available.You aren't able to freeze your membership and use the classes either, so the policy is strict, and there doesn't seem to be any wiggle room at all. The staff have communicated that this is manual, which I can imagine is quite frustrating for them. If that is the case, is it possible to make exceptions or send out comms around this in the future (Friendly reminder to check Mindbody for any classes as any unused will not roll over as of June 30?) For it to be manual for the staff and for the guests, perhaps considering an email reminder to everyone about this.I would love for the studio to reconsider this policy for continual rollover, or update your own app so that this is more transparent and you can book and see availability in one spot and you do not need to go back and forth with someone via email.”
6AM - 7:15PM
2480 49th St, Boulder
Gyms
“Hands down the absolute best gym I've had the pleasure of working out in! The owner Monique cultivates a welcoming atmosphere of warmth and positivity. Boulder CrossFit is the perfect gym for athletes of all shapes, sizes, and fitness levels and provides an extraordinary amount of expertise and support whether you are an absolute beginner or seasoned CrossFit veteran. I couldn't imagine working out anywhere else!”
“Visiting from out of town and did a one day guest pass for $30. Great clean facilities with plenty of equipment. Staff was really friendly. Could definitely see myself joining if I lived in Boulder.”
6 - 7PM 6 - 9AM
1840 Commerce St, Boulder
Gyms
“Training at Alpine Training Center has been a game-changer for me. The environment is incredibly supportive and accepting—no ego, just a community of people working hard and cheering each other on. Since starting personal training here, I’ve summited five mountains, including my most recent peak at over 20,000 feet—and I’m over 50!
The programming is smart, challenging, and tailored to help you build real strength for real goals. Whether you're training for the mountains or just want to be stronger and more capable in everyday life, ATC delivers.
I can’t recommend this place enough. It’s not just a gym—it’s a community that pushes you to become your strongest self, inside and out.”
6AM - 6:30PM
3240 Pearl St, Boulder
Gyms
“I'm still fairly new to Boulder, and I tried multiple gyms to find the best fit. I felt right at home at Boulder Athletics. People were so welcoming and friendly, it was easy to want to return. The coaches are kind and knowledgable. I had some health issues and there was a period of time when I couldn't attend classes. Kelsi was so compassionate and willing to work with me so I could use my classes once I was ready to return. I'm beyond grateful. It is such a welcoming community and I'm excited to jump back in. Thank you Kelsi and Park for being great people as well as great business owners.”
“Affordable, friendly, comfortable gym with ALL the equipment and no creeps :) Plus a cute corgi mascot who greets me for (almost) every workout.
I've been working out here for ~7 years and greatly benefitted from the bodywork and personal training offered. I've learned so much; I started as a shy and nervous person who hadn't lifted weights since high school. Now I feel comfortable going into any gym and knowing exactly what to do.”
5:45AM - 7PM
1850 29th St, Boulder
Gyms
“I have been going to OT Boulder for around 2 years and I couldn't be happier. For the first time in my life I enjoy going to the gym, the workouts are always challenging and being able to monitor your heart rate really makes a difference in how to adjust your performance during the workout.
All coaches are great and coach Courtney is the absolute best.
I highly recommend Orange Theory to everyone.”
Open 24 hours
4660 Broadway, Boulder
Gyms
“Scott and the Ironworks team have a great little neighborhood gym here. Excellent spot if you want a local, small workout option and want to avoid the crowds of large commercial gyms.”
“Signed up and did a noon class with Abdul. Class was well organized and taught with proper techniques. The gym overall is very welcoming and has all the equipment needed for the athletes. Definitely looking forward to the other classes.”
“Superhuman experience has been fantastic for my kids. Terrific coaches, great space, positive environment to build strength, balance, proprioception, and confidence — while having tons of fun! Highly recommend.”
Open 24 hours
4735 Walnut St Ste E, Boulder
Gyms
“If you’re recovering from an injury, looking to get strong, looking for a great trainer focused on technique and safety or simply a well-run, clean gym, look no further.
Jason and his team helped me recover from a series of soft tissue and orthopedic injuries, get strong, improve my mental and physical resilience, and protect myself from future re-injury.
The team at Body Balance also worked with my physical therapist to make sure I was getting the right mix of strength and flexibility.
Body Balance has been a game changer for me. Run don’t walk!”
6AM - 7PM
5603 Arapahoe Ave #5, Boulder
Gyms
“I've used over a dozen various trainers in Boulder County. Matt H & Petra are by far the best trainers from the bunch. I would highly recommend them for anyone looking for results.”
Open 24 hours
6420 Gunpark Dr STE B, Boulder
Gyms
“I've been training at this gym for just over three years. In that time the facility has continually improved and adapted to the changing needs of its members. The coaching staff is incredibly professional and knowledgeable, helping me to secure a national championship in my sport while improving my overall health and performance. I've been to just about every strongman gym in Colorado and Gym 5 is by far the nicest, with just about everything you'd ever need for comp prep.”
Open 24 hours
1850 30th St, Boulder
Gyms
“I just started at Crunch Fitness and I couldn't have made a better decision. A huge shoutout to Chuck, the GM, who truly sets the tone for the entire gym. You can tell he genuinely cares about the members and the staff. He’s approachable, professional, and always making sure everything runs smoothly. That kind of leadership really shows in how friendly and helpful everyone is.
If you’re looking for a gym in Boulder that has great vibes, great people, and great results, Crunch Fitness is the place to be. Highly recommend! ??”
“Nice disc golf course. Pretty busy at times. Also has pickleball and volleyball courts. There's a bit less bathrooms and parking than ideal but definitely ok. Beautiful to spectacular views.”
6:00 AM - 9:30 PM
3170 Broadway, Boulder
Gyms
“Great programs for all ages!Our twin toddlers thrived in the structure and had so much fun working with the coaches. They got to experience all of the equipment and became excited about the sport.”
“Great gym. Big space. Very seldom crowded. Nice people. Wide variety of equipment. Options for physical therapy, personal training, group classes, ice bath, sauna, and massages.”
5:15AM - 7PM
3370 Arapahoe Ave, Boulder
Gyms
“I highly recommend PeaksFit! The programs are innovative and science-based – you will never be bored. The coaching by Sally and Jess is supportive yet motivating, and the hour-long classes suit busy professionals well. Importantly, each class is carefully structured for maximum efficiency and leads to measurable results. Much like Jane Fonda's pioneering approach to fitness, PeaksFit builds on the legacy of making exercise accessible and empowering for everyone.”
Open 24 hours
6565 Gunpark Dr, Boulder
Gyms
“My girlfriend and I joined the gym for a couple of months while we were living in Boulder. Rebecca and the team couldn’t have been more helpful and kind in every way. Loved getting here early each morning – always the perfect start to the day!”
5:30AM - 8PM
2850 Mapleton Ave, Boulder
Gyms
“It's huge! It has all the things and classes anyone could want, including summer camp and day care for the kids. I see every age represented in the weight room, ping pong balls from the work out room, and steaming people coming from the warm water pool or the sauna. I don't need a boutique gym, and no one needs to pay for one.”
“✨️MY FAVORITE ? ESTATIC DANCE ? VENUE IN BOULDER COLORADO❣️??? ? I so appreciate all the Love & good cheer the people bring to the room. Dancing, hugs, ? pit out front... it's truly an amazing spot!!Thank you Vali Soul Sancuary for Hosting these Fabulous Gatherings❣️ I've had many Spiritual Awakenings here ?~Krystal Noel Leggett, Channel Love”
“Gold Run has great amenities with a secure health club that has large weight room, racquetball courts, saltwater swimming pool, two hot tubs and saunas. Outdoors there are tennis and pickleball courts, barbecue area, volleyball pit, and community gardens. All right next to Boulder Creek and Scott Carpenter Park!”
5AM - 10PM
2900 Iris Ave, Boulder
Gyms
“I live across the street and have been coming here for several months now. They have great group classes offerings and have been super helpful and accommodating with any questions I’ve had!”
6AM - 10:30PM
2845 Valmont Rd, Boulder
Gyms
“Fun people. They have a bouldering area, gender neutral toilets, a workout area with weights and treadmill, climbing accessories and shoes to sell. You have to demonstrate your belaying for top rope and your lead climbing skills to be allowed to climb there.”
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“Customized Nutrition & Exercise Gym really offers it all. 24/7 access allows for flexibility with workout schedules, the equipment is all up to date and covers all your needs, there’s space for yoga and stretching along with cool down areas after a workout, and ample personal training options too to improve your own exercise habits and routines. Really it’s a perfect place for exercising.”