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DT Coaching

Thrive, Don't JUST survive.


DarBy Thomas


Professional Coaching Services




Sport has been in my blood since the beginning.  As a little kid I played soccer (football) and hockey. As I grew, endurance sports became my passion, first with mountain biking and then road cycling.  After a few years racing on the US under-23 national team, I found myself searching for something different.  Triathlon is what I found.  

Triathlon has been my passion and my competence for the past 10 years.  With 10 Finnish national titles and more than 10 top-10 placings in professional Ironman and 70.3 events, I continue to improve and move my way to the top of the sport.  

I began coaching with cycling and moved into triathlon as I developed myself as a professional triathlete.  The past few years I have coached a wide range of athletes with levels from beginners to Ironman Hawaii qualifiers.  



A structured and well prepared training schedule has been essential for me. All I need to do is focus 100% on the workouts, not on what or for how long.

Darby’s work ethic when training is admirable and he acts as a great example for all athletes, professionals or amateurs.
— Sauli, Espoo
I have been working with Darby for the last 2 years, his coaching has got me to athletic levels which I couldn’t imagine when I have started triathlon few years back. My FTP is gone up with about 80w, I broke all of my running records and finished 12 (AG) on my last ironman. Darby is always available for any question, he looks on all aspects for training (exercise, recovery and nutrition) , learning from his rich experience can be a game changer on your next race.
— Tomer, Espoo
We employed Darby to break-up a long international sales meeting day with something different, that would give us perspective to our own daily lives. We asked him to tell about his life as a professional triathlete. Somehow our everyday challenges seemed easy. Darby gave us an interesting insight to a though life and reminded us that goals can be achieved with a lot of hard work. I can warmly recommend Darby as an lecturer to various business events.
— Christer Hede, managing director EuroPark Finland Oy
We are not here for a long time, we are here for a good time
— - Unknown