Endurance Race Calendar August

Dulles 5K/10K on the Runway

Chantilly, Virginia, United States

29 Aug, 2026 (Sat)

$45.00 - $55.00

Running

5K 10K

TRI Clear Lake 2026

Clear Lake, Iowa, United States

29 Aug, 2026 (Sat)

$50.00 - $200.00

Triathlon

25.7K Ultra +1

SPASM Crystal Springs Trail Run

Woodside, California, United States

29 Aug, 2026 (Sat)

Free - $90.00

Trail running, Running

10K Half-Marathon 35.4K Marathon +2

Spacious Skies Invitational

Erie, Pennsylvania, United States

29 Aug, 2026 (Sat)

$10.00

Running

1.6K 3.2K +4

Tunnel to Towers 5K Run & Walk - Portland, ME

Portland, Maine, United States

29 Aug, 2026 (Sat)

$10.00 - $35.00

Running

5K

Deer Trail Run 5K/10K/Half-Marathon

Cincinnati, Ohio, United States

29 Aug, 2026 (Sat)

$30.00 - $75.00

Trail running

5K 10K Half-Marathon 30K

Deal's Orchard Spiked Apple 5k

Jefferson, Iowa, United States

29 Aug, 2026 (Sat)

$30.00

Running

5K 2.4K

Dandilion Daze Brew Run 5k

Muskego, Wisconsin, United States

29 Aug, 2026 (Sat)

$30.00

Running

5K

UCan 5k - Raymond, Maine

Raymond, Maine, United States

29 Aug, 2026 (Sat)

$45.00

Running

5K

Unbridled Women Adventure Race

London, Kentucky, United States

29 Aug, 2026 (Sat)

CYO Toledo Color Run

Toledo, Ohio, United States

29 Aug, 2026 (Sat)

$30.00

Running

5K

Cupcake Crawl

Tampa, Florida, United States

29 Aug, 2026 (Sat)

$25.00 - $35.00

Running

5K 1.6K