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Our goal is to help athletes reach performance goals while keeping the body in the best health possible.
We train in a way that provides optimal performance gains with the least amount of training stress. 


Our philosophy is simple:
Eat well, fuel smart, stay mentally strong, train hard, recover a lot and execute on race day. We believe in a real food diet to keep the body nourished and we value the importance of nutrient timing and the proper use of sport nutrition to support the training load. 
Our coaching and nutrition services are designed with your performance goals and health in mind so that you can reach your goals all while living a balanced, healthy and active lifestyle.


Are You planning your 2016 season but lack a training plan?
Let Trimarni help you train smarter to train harder. 
Check out our 20-week Olympic, Half Ironman and Ironman training plans. 
ANd new for 2016 - our Performance Plan Team! 


Click here to learn more about our camps. They offer the right mix of training, information, and fun.  Check out our 2016 Race schedule for our tentative camp dates this summer. 


Trimarni offers several services in the areas of personal fitness, health, body composition and performance. Our services are designed to help you live a more healthy and active lifestyle while moving you closer to your goals. If you don’t see a service that interests you, contact us to create your own personalized service. 

If you are interested in private training, we also provide group training, camps and clinics upon request. We have a perfect playground in Greenville for swim, bike and run training if you'd like to travel to come and train with us. Please inquire for more information. 


"... Marni has motivated me to dream big. She lives by that example and has given me tools not only to race and eat effectively, but to have a few PR's in the process. I couldn't have done it without her thoughtfulness, knowledge, and positive energy."
-- Sara Lane

" Marni is always eager to help and her positive energy is contagious. Marni is truly a blessing in my life and I am so grateful to have her as my coach."
-- Cindy Stellmach

More Testimonials

Are you considering a 20-week Trimarni endurance plan but feel you need more education and learning in prep for your endurance event?

If you are interested in weekly communication from Marni and Karel, in order to help with nutrition, mental strength, training, race strategies, recovery and sport nutrition, consider being part of our "performance team". NEW FOR 2016 - PERFORMANCE TEAM

If you are a triathlete who is interested in being part of the Trimarni team but not ready for individualized-coaching this season, our PERFORMANCE PLAN team is designed just for you! With the purchase of an endurance Trimarni 20-week triathlon training plan (Half or Ironman distance), you can feel part of a team by joining our private Trimarni Coaching Facebook page to socialize with your fellow Trimarni teammates, connect with us at key Trimarni races and camps and get priority registration for our camps, receive our weekly “check-in” emails (which will provide you with weekly education, information, tips, race results and support) and receive our sponsor discounts.

At check-out when purchasing your 20-week half or full Ironman training plan, select "Performance Team". After your purchased training plan is emailed to you, you will be part of the Trimarni team for only $50 a month (we will contact you regarding set-up for monthly payments). You can cancel your $50/monthly payment anytime. No application needed for the performance team. This service will be available on November 30th, 2015.

As recent 2015 Ironman World Championship finisher, we understand what is required to be in the best shape possible by race day and to be able to execute with a healthy body on race day. No matter what level athlete you are, we want to be part of your training and racing journey! .

Solestar now on sale!

Solestar - The new level of cycling insoles. Trimarni is now a Solestar dealer

Solestar - The new level of cycling insoles. Trimarni is now a Solestar dealer

If you have a PERFORMANCE or nutrition goal
LET Trimarni COACHING AND NUTRITION help you reach it.