A Day in the Life: Altitude Triathlon Camp in Font-Romeu
Marten Van Riel on that CRAZY sprint finish
マーテン・ヴァン・リエル - 水泳とジムのセッション
Two Years After my Injury: Winning the Ironman 70.3 in Bahrain
Becoming a Pro Triathlete ft. Marten Van Riel
Closest Triathlon Finish Ever!?! I Won T100 San Francisco!
Marten Van Riel - しきい値実行セッション
Marten Van Riel 🆚 Rico Bogen | H2H Interview | Ibiza T100
Unbelievable Triathlon Sprint Finish - Alex Yee Vs Marten Van Riel In Head To Head Race
In Search of Sharks & Jellyfish | Behind the Scenes at Ibiza T100
Keep it RIEL with Belgian Hammer Marten Van Riel
The Riel Distance with Average Rob
Countdown to San Francisco T100: New Threats | Marten Van Riel, Taylor Knibb
Becoming a Triathlon Champion with Marten van Riel
The road to RIO 2016 Marten Van Riel
The Party Begins | Behind the Scenes at Ibiza T100
アリーナ ゲーム トライアスロン レースデー - マルテン ヴァン リエルによるオール アクセス
Marten Van Riel rêve de l’or
The man EVERYONE is talking about | Marten van Riel debut at San Francisco T100
Tokyo thoughts with Marten Van Riel