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 9186 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

June 2026
Jun
5-7
Fr - Su

Safe Fun-Fit Endurance Fest

Multisport
Jun
5
Friday

Tsalteshi Backyard Ultra

Backyard Ultra
Jun
5-6
Fr - Sa

Alaska Endurance Trail Run

Backyard Ultra 6 hr 12 hr 24 hr
Jun
5-6
Fr - Sa

MoMoFo100k

Trail Run 20 mi 100 km
Jun
5-7
Fr - Su

Harvard Milk Days

Jun
6-7
Sa - Su

Tri-State New York Event Weekend

Obstacle Run 5 km 10 km
Jun
6-7
Sa - Su

Cincinnati Spartan Trifecta Weekend

Obstacle Run 5 km 10 km 21 km 50 km
Jun
6
Saturday

Utah Valley Marathon

5 km 10 km 21 km 42 km
Jun
6-7
Sa - Su

Dam Yeti 50

Trail Run 25 km 55 km 50 mi
Jun
6
Saturday

Slate Run Trail Race

Trail Run 25 km
Jun
6
Saturday

Scott Coffee Moorestown Rotary 8K

8 km
Jun
6
Saturday

Hanson Hills Challenge Trail Run

Trail Run 3 mi 5 mi
Jun
6
Saturday

J. R. Taylor 5K Race

5 km
Jun
6-7
Sa - Su

Lake Norman Half Marathon Forest Run

5 km 13 mi
Jun
6
Saturday

Pronghorn Pursuit Trail Run

Trail Run 5 km 15 km
Jun
6
Saturday

Latinas in Motion: Peace, Love and Run 5k

5 km
Jun
6
Saturday

Another Clucking 5K

5 km
Jun
6
Saturday

Aquarium Run

5 km
Jun
6
Saturday

Matters of the Heart Nashville 9K Run/Walk

9 km
Jun
6
Saturday

Welcome Home Plants 5k

5 km
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