About Us

CrossFit is a strength and conditioning program that produces results.

Working with a personal trainer in a group setting allows you to progress quickly towards your goals — as an athlete or just in life.

CrossFit Chiang Mai is the first CrossFit affiliate in Thailand.  We focus on nutrition, strength and conditioning as three important components of fitness. Workouts are scaled for each individual athlete's level of strength and fitness, pre-existing injuries or other special concerns.  Workouts include a mix of running, Olympic weightlifting, gymnastics, conditioning and other activities.

CrossFit Chiang Mai is partnered with the International Sustainable Development Studies Institute (ISDSI), an expedition based experiential learning program focused on culture and ecology (see www.isdsi.org for more).  ISDSI students do CrossFit as a part of their semester in Thailand, and ISDSI instructors do CrossFit and help lead classes at CrossFit Chiang Mai.

Our trainers

Mark Ritchie is a CrossFit Level 1 Certified Trainer (CF-L1), USAW Olympic Weightlifting Coach certified, CrossFit Mobility certified, CrossFit Gymnastics Trainer Certified, a Wilderness First Responder (WFR), and has lived in Thailand for about 20 years. He has been a rock climbing instructor, and has a background in adventure sports (climbing, sea kayaking, backpacking, etc.). He's also the executive director of ISDSI, and the father of Miriam and Lydia and married to Dana.

Monica Kientz is a CrossFit Level 1 Certified Trainer (CF-L1).  She is also CrossFit Kids certified, CrossFit Mobility certified, and CrossFit Gymnastics Trainer Certified.  She is a certified USAW Olympic Weightlifting coach and has completed the Starting Strength Coaching course.  She is also Functional Movement Level 1certified. She is certified as a Travel Medicine First Responder/Wilderness First Responder.  She has a background as a competitive sailor. Monica is married to Michael and the mom of three kids.

Andrew Telfer is a CrossFit Level 1 Certified Trainer (CF-L1), NSCA certified strength and conditioning Specialist (CSCS) ACE CPT, and USAW Olympic Weightlifting certified coach. He has a teaching background with experience in both the USA and Thailand.

Guest trainers: We also offer special seminars, workshops and workouts with many of the outstanding folks who are based in or traveling through Chiang Mai.


ADDRESS: 48/1 Chiang Mai-Lampang Road (Superhighway), Muang, Chiang Mai, 50300, THAILAND

EMAIL info@crossfitchiangmai.com / TELEPHONE 082-381-4938 during office hours (9-5, M-F), 094-610-1665 (Monica's mobile #).

FACEBOOK https://www.facebook.com/crossfitchiangmai

Gym & Equipment 

We've built CrossFit Chiang Mai to take advantage of sustainable design where we can -- no walls (or not many) and what we have are more of a woven bamboo screen.  The gym is open air (great especially for morning workouts) with mist fans for when it gets hot.  We've also planted bamboo around the edges to keep things cool naturally, as well as to filter dust.

We've incorporated some recycled materials into the design as well -- the concrete floor was poured over rubble from the old garage we pulled down to build our gym, and our set of lockers was reclaimed and repainted. Our big tires for flipping were, of course, used, and better yet, free!
We've built a shed for the equipment with roll-down doors, and also two hot showers and a toilet. The concrete pad for the showers and toilet re-used part of an older concrete pad, and incorporated recycled rubble and brick.
Much of our equipment is imported from the United States.  Thanks to CrossFit Malibu for helping with the initial shipment, and to Rogue Fitness and Again Faster for great customer service and gear!