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Triathlon Calendar United States 2025-2026

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Explore the best triathlons in the United States for 2025-2026! Our updated list features 443 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

November 2025
Nov
15-16
Sa - Su

Oilman Texas Triathlon

Triathlon
Nov
15
Saturday

Harvest Hare

Triathlon
Nov
16
Sunday

Ironman Arizona

Triathlon
Nov
16
Sunday

Game On Florida Lagoon Triathlon

Triathlon
Nov
16
Sunday

Last Chance Triathlon

Triathlon
Nov
16
Sunday

IC Tri for the Y

Triathlon
Nov
16
Sunday

Tri Hard Triathlon: the Last Splash

Triathlon
Nov
16
Sunday

Kendra's Race

Triathlon
Nov
22
Saturday

Ashley River Adventure Race

Multisport
Nov
22
Saturday

Tali Sadlers Creek Off-Road Duathlon

Cross Triathlon
Nov
23
Sunday

Turkey Dri Tri Oak Brook Park District

Triathlon
December 2025
Dec
5-7
Fr - Su

CLASH Endurance Daytona

Triathlon
Dec
7
Sunday

Ironman 70.3 La Quinta

Triathlon
Dec
7
Sunday

Game On - Treasure Coast Tri

Triathlon
Dec
7
Sunday

Bonner Springs YMCA Tri at the Y

Triathlon
Dec
8
Monday

White Continent Triathlon

Triathlon
Dec
13
Saturday

Frozen Hare

Aquathlon
Dec
13
Saturday

Holiday Classic Triathlon

Triathlon
Dec
14
Sunday

Key West Triathlon

Triathlon
Dec
14
Sunday

Ironman 70.3 Florida

Triathlon
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