Featured Team D3 Athlete

Kyle O’Leary

Coached by Brad Seng, USA Triathlon Certified Coach

Kyle’s current work schedule as an engineer in the oil industry has him doing 28 days on, then 28 days off an oil rig located 150 miles offshore.  His commute to and from the rig is done via a helicopter.

Athletes who are coached 1-to-1, follow a Custom Training Plan, or use one of our Pre-Built Training Plans are considered members of Team D3.  Athletes can become part of the Team at any time through our coaching services.  These athletes experience the double power of coaching and camaraderie.  Once a year, in the fall, we publicly invite athletes who are not currently coached through D3 to join Team D3 with the understanding that they will support the Team the following year. 

Team D3 athletes embrace our coaching principles of Desire, Determination and Discipline and are great ambassadors of triathlon.  They also share in the camaraderie and benefits of a diverse, passionate group of athletes. Team D3 athletes range in ability from beginner to elite, and they train in home towns that span between Boulder – New York City – San Diego – Costa Rica – Dubai – and so many places in between!  With an incredible 19 years of triathlon coaching and team management expertise, we use a mix of technology, social media, events, partners and of course, racing to bring athletes together – no matter where they live. 

Take a peak at our Team!


Jennie Z. takes 3rd AG at Ironman AZ 70.3 and 13th female OA. Coach Mike shared that Jennie finally had a chance to race this season and put her dedicated training to the test!

Virtual Fun

Team D3ers are dedicating 18 days in December to the Core Challenge. What to join us? Follow these 6 videos. The first six days do one video per day. The second six days do one video x two sets per day. The final six days do one video x three sets per day!


Fresh in from art class! Luvn’ that D3 inspires young athletes.