CrossFit ThorntonCrossFit Thornton

12061 Pennsylvania St.Suite B-103 Thornton,CO 80241
 | [email protected]
 | 303-495-5040

CrossFit Thornton is a school of elite fitness located in Thornton, CO

Call us at 303-495-5040 or send us a message below to sign up for a free week!

Goal Based Fitness

Get in the best shape of your life. Whether you’re 18 or 80 CrossFit Thornton’s program can be tailored to help you reach YOUR goals!

  • Lose your fear of the mirror
  • Become Leaner and Stronger
  • Grow Faster and More Powerful
  • Be the Neighborhood Superhero
  • Oh…and there’s the whole look great naked thing…

You get…

  • Programs specific for your goals, schedule, and budget!
  • Memberships as low as $99 a month!
  • Customized nutrition plans designed for your needs
  • Special events to keep you engaged throughout the year
  • Training scaled to YOUR level of fitness
  • Deals, seminars, and clinics EXCLUSIVE to CrossFit Thornton Athletes

What our athletes are saying

I hate to workout, but I love CrossFit! Lawrence is a great coach and the family environment is great. Makes me look forward to working out(never thought I would say that!) -Paulette

Very welcoming community, down to earth. Supportive and knowledgeable trainers. -Shelly

Have to say, it’s a fantastic place with great people. The coaches are excellent. I thoroughly enjoy coming here. -Lindsay


No better way to start a day! Breaking through barriers I never thought possible 6 months ago. Awesome!!! -Peter

I love the atmosphere of CrossFit Thornton. The friendly vibe and supportiveness of all the members keep me coming back. That and the coaching – I’ve never had this kind of attention to detail without having to pay for a personal trainer! -Sarah

I’ve got a long way to go before I reach my goals but with such great trainers and athletes around me I know it’s only a matter of time before I get there. -Lance

I’ve been a member at this gym for about 3 weeks. When I walked in the door for the first time I didn’t know how to do any of the lifts. The coaches are very knowledgable and eager to help. They go over every single exercise that we will need to know for the warmup and for the actual workout. They are very attentive. They are constantly coaching, giving motivation and tips on technique during the workouts. I’m not an athlete and I’m also a little shy. When I went to my first workout the other members introduced themselves to me right away. It made me feel very comfortable. Everyone supports each other during the workout. Members want to see each other do well. It’s a great gym. -Lexington


Love the coaches and the community here! Great workouts, great environment, great RESULTS! -Laura

My experience at CrossFit Thornton has been and will continue to be life changing. Our coaches have created an environment that is inviting to everyone not to mention the knowledge and expertise they bring to our box. So many people ask me if CrossFit is easy and if they can do it. The truth is, it never gets easy. You just get better. CrossFit is perfectly designed to push you as far as you are able to go no matter what level you are. You will not find a better community of athletes & coaches anywhere else. -Kristi

After a number of years of inactivity and general health decline, I was looking for a place to build my overall fitness, challenge myself mentally, learn new things and make some new friends. Amen! I found it all at CrossFit Thornton. Great coaches. Great community. I feel more confident in my workouts and I now have a sustainable way to maintain better health and longevity. Thank you CrossFit Thornton. -Jim

The coaches, and community make this something I look forward to everyday. -Randy

The environment with the Coaches and members is unlike any other gym. It’s a very welcoming gym that pushes you towards your goal. No better gym around that has such supporting and friendly people! -McKenna


Don’t miss out on becoming the best version of yourself!

Click here to sign up now!

Find us

  • Address: 12061 Pennsylvania St.Suite B-103 Thornton,CO 80241
  • Telephone: 303-495-5040
  • Email: [email protected]