Running Calendar United States 2025-2026

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Explore the best running races in the United States for 2025-2026! Our updated list features 11298 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

Half Marathons Marathons Obstacle Runs Trail Runs Triathlons
May 2026
May
16
Saturday

Mountains to Mainstreet Half Marathon

5 km 13 mi
May
16
Saturday

Foreshore Adventure Run

Obstacle Run 5 km
May
16
Saturday

Keris Kares Royal Run

5 km
May
16
Saturday

O'So Brewery Honor Flight 5K Run/Walk

5 km
May
16
Saturday

Run With Shears

5 km
May
16
Saturday

Washington Police Explorers Post 2438 5k Run

5 km
May
16
Saturday

Guardian Angel Color Run

5 km
May
16
Saturday

SDA Color Run

5 km
May
16
Saturday

Clear Creek Half Marathon

3 mi 6 mi 13 mi
May
16
Saturday

Massanutten Mountain Trails 100 Mile Run

Trail Run 100 mi
May
16
Saturday

Silver State 50/50

Trail Run 13 mi 31 mi 50 mi
May
16
Saturday

Galena Sky Trail Races

Backyard Ultra 4 hr 8 hr
May
16
Saturday

Bishop High Sierra Ultras

Trail Run 6 km 20 mi ... 50 mi 100 km
May
16
Saturday

Superior Spring Trail Race

Trail Run 12 km 25 km 50 km
May
16-17
Sa - Su

KEYS100 Ultramarathon

50 km 50 mi 100 mi
May
16-17
Sa - Su

Tillamook Burn Trail Run

Trail Run 55 km 50 mi
May
16
Saturday

Extreme Adventure Challenge

Obstacle Run 10 km
May
16
Saturday

Berryman 50 Mile and Marathon Trail Races

Trail Run 26 mi 50 mi
May
16
Saturday

High Lea 6/12/24 Hour

Backyard Ultra 6 hr 12 hr 100 mi 24 hr
May
16-17
Sa - Su

Gladiator Assault Challenge

Obstacle Run 5 km 5 mi 7 mi
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