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Greenville, SC

Trimarni is place where athletes and fitness enthusiasts receive motivation, inspiration, education, counseling and coaching in the areas of nutrition, fitness, health, sport nutrition, training and life.

We emphasize a real food diet and our coaching philosophy is simple: Train hard, recover harder. No junk miles but instead, respect for your amazing body. Every time you move your body you do so with a purpose. Our services are designed with your goals in mind so that you can live an active and healthy, balanced lifestyle.


Effective coaching and nutrition strategies designed to help athletes achieve healthy habits and athletic excellence. 

Select the Trimarni service that will help you reach athletic excellence. 


Welcome to Trimarni

For the past 12 years, Marni and Karel have shared an active lifestyle together. During that time, they achieved many athletic accomplishments in the sport of triathlon and cycling which led them to turn their passion into a coaching and nutrition business in order to help athletes reach personal athletic goals. This husband and wife team continues to race at a high level, while dedicating their career to helping athletes of all levels, newbie to elite, maximize sport performance while keeping the body in great health.
Between them both, they have successfully finished 28 Ironman triathlons and have qualified for the Ironman World Championship in Kona, Hawaii a combined 11 times.

As highly dedicated athletes, Marni and Karel bring many years of practice, education and skills in their own athletic careers and apply that experience and knowledge to athletes of all levels. They strive to be good role models for their athletes and great ambassadors for the sport of triathlon.


Trimarni Philosophy

Our goal is to help athletes reach performance goals without compromising health.
We use effective coaching and nutrition strategies to help athletes achieve healthy habits and achieve athletic excellence. 
We incorporate scientific research with practical ideologies and apply to real world settings to take current training and racing to that next level.

Let us help you perform at your best by giving you the personalized service that your body deserves.



Here's how: 
-Sport and Daily Nutrition  
-Coaching- Custom
Training Plans - educational team
RETUL bike fit
Group and private training camps
-Subscribe to our Newsletter     
Follow Trimarni on social media                                 

BEcause we want YOu to be part of our TRIMARNI team!


1) One-on-one athlete - December start date, billed per month, full season committment. Learn more about our coaching options HERE Price: $150-$300/month

2) Educational Team - 3-month minimum, billed per month, receive weekly educational handouts and videos, email questions anytime and receive Trimarni educational content for non-stop learning throughout the season. $50/month

3) Pre-built training plans - Price: $67-$220