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 8451 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

July 2025
Jul
27
Sunday

Dash for Smiles

5 km
Jul
27
Sunday

Stations of the Cross 10k

10 km
Jul
27
Sunday

Summer MoCo 10k

5 km 10 km
Jul
27
Sunday

A Sundae in July 5K Run/Walk

5 km
Jul
28
Monday

The Summit 200

Trail Run 200 mi
Jul
28
Monday

UNI5K Fun Run/Walk

5 km
Jul
28
Monday

NYS Parks Summer Race Series - New York

5 km
Jul
28
Monday

Sea Rim Striders Free Summer Run/Walk Series

5 km
Jul
29
Tuesday

Catamount Weekly Trail Running Race

Trail Run 5 km
Jul
29
Tuesday

Winding Trails Sprint Triathlon

Triathlon
Jul
30
Wednesday

Brick Endurance Summer Triathlon Series

Triathlon
Jul - Aug
30-3
We - Su

Bearfest Marathon

26 mi
Jul
30
Wednesday

ESTRS Spring Lake Park 5 Mile

Trail Run 5 mi
Jul
30
Wednesday

Race for Freedom

5 km
Jul
31
Thursday

Dublin Irish Festival 5K

5 km
Jul
31
Thursday

Corporate Fun Run Pittsburgh

5 km
Jul
31
Thursday

Rams Twilight Trail Run

Trail Run 5 km
August 2025
Aug
1
Friday

Folsom 100

Trail Run 20 mi 54 mi 100 mi
Aug
1-2
Fr - Sa

Rocky Mountain Half Marathon

5 km 13 mi
Aug
1-3
Fr - Su

Ragged 75 Stage Race and 50K

Trail Run 50 km 75 mi
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