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Running Calendar near Littleton 2026-2027

Monthly updates for Littleton

Get new running races (and updates) in your inbox every month.

Explore the top running races near Littleton for 2026-2027! We've gathered 218 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons Fitness Races
August 2026
Aug
1
Sa

Run for the Ring

5 km
Aug
1-2
Sa - Su

2 Brothers Up & Down

Trail Run 5 km 10 km
Aug
2
Su

Bound for Boston Marathon - Denver

13 mi 26 mi
Aug
6
Th

Eldorado Run for the Cure

4 mi
Aug
7
Fr

RMRR Trophy Series

5 km
Aug
8
Sa

All-Out Runapalooza

5 km 10 km Half Marathon
Aug
8
Sa

Arapahoe Warrior 5K

5 km
Aug
8
Sa

Summer Sizzler - Denver

3 mi 6 mi 15 km
Aug
8
Sa

Reece's Roundup

5 km 10 km
Aug
15
Sa

Roxborough Ultras

Trail Run 31 mi 50 mi
Aug
15
Sa

The Best Races - Foxfield

5 km 10 km 13 mi
Aug
15
Sa

Miles for Migraine Colorado

2 mi 5 km
Aug
15
Sa

Westminster Night Trail

Trail Run 5 km 10 km ... 35 km 50 km
Aug
22
Sa

Ram Run

5 km
Aug
22
Sa

Staunton Rocks

Trail Run 13 mi 26 mi
Aug
22
Sa

Bergen Peak Half Marathon Trail Race

Trail Run 11 mi
Aug
23
Su

Pioneer Prairie Dog Half

5 km 10 km 13 mi
Aug
23
Su

Rebel Run 5k

3 mi
Aug
29
Sa

Rock Hawk

Trail Run 5 km 10 km 25 km 50 km
Aug
29
Sa

RexRun For PAWSitivity Trail Run/Walk

Trail Run 5 km
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