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 11976 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

October 2026
Oct
25
Sunday

Halloween Horror 10k

Trail Run 5 km 10 km
Oct
31
Saturday

Angels Vs Devils 5k

5 km
November 2026
Nov
7
Saturday

Saddleback Marathon

Trail Run 10 km Half Marathon Marathon
Nov
14
Saturday

Savage Race - Florida Fall

Obstacle Run 3 mi 7 mi
Nov
21
Saturday

Run Manatee - Rye Preserve 5K

5 km
Nov
26
Thursday

Plymouth Rock n Run

5 km 10 km
December 2026
Dec
12
Saturday

RunAround

5 km
Dec
13
Sunday

Charm City Run Events Signature Races

5 km 4 mi ... 12 mi 20 mi
Dec
19
Saturday

5K Run.Walk.Roll Kapolei

5 km
Dec
31
Thursday

RS Demo

5 km
January 2027
Jan
2
Saturday

Iron Horse

Trail Run 100 km 100 mi 200 mi
March 2027
Mar
1
Monday

Screenland 5K

5 km
Mar
21-22
Su - Mo

Bakersfield Marathon

6 km 10 km Half Marathon Marathon
January 2028
Jan
1
Saturday

The 24 Hour Relay Fundraiser for Holy Cross Prep Cross Country

Backyard Ultra 24 hr
December 2028
Dec
24
Sunday

500 People

5 km 10 km
July 2029
Jul
24
Tuesday

Pickle Events Run

5 km 10 km
August 2029
Aug
1
Wednesday

Pickle Events Triathlon

Triathlon
January 2030
Jan
1
Tuesday

Mental Health Run

4 mi
Jan
1
Tuesday

Gemini Timing Demo

5 km
March 2030
Mar
3
Sunday

AndyMan's RaceDay Certification

5 km
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