Running Race Calendar in Colorado, United States

The Bullfrog Splashdown

Littleton, Colorado, United States

Jun 14, 2026 (Sun)

Running

10K 5K 2.4K 8.9K

St Mary's Church "Loop the Lake 5K" at Lathrop State Park

Walsenburg, Colorado, United States

Jun 13, 2026 (Sat)

Running

5K

Howelsen Hill Trail Run

Steamboat Springs, Colorado, United States

Jun 13, 2026 (Sat)

Running

12.9K 6.4K

Sam's Rainbow Run

Fort Collins, Colorado, United States

Jun 13, 2026 (Sat)

Running

5K 1.6K

All-Out Summer Breeze

Arvada, Colorado, United States

Jun 13, 2026 (Sat)

Running

Half-Marathon 10K 5K +2

Stepping Stone 5K

Littleton, Colorado, United States

Jun 13, 2026 (Sat)

Running

5K 2.5K

Holy Hammers Hustle for Habitat

Parker, Colorado, United States

Jun 13, 2026 (Sat)

Running

4.8K

Jodi's Race 5K

Denver, Colorado, United States

Jun 13, 2026 (Sat)

Running

5K

Denver Miles for Melanoma 5K

Denver, Colorado, United States

Jun 13, 2026 (Sat)

Running

5K

Guardian Games

Loveland, Colorado, United States

Jun 13, 2026 (Sat)

Running

Hyrox Sim

Frederick, Colorado, United States

Jun 13, 2026 (Sat)

Running

Half Hyrox Sim Individual Half Hyrox Sim (Teams of 2) Full Hyrox Sim (Individual) Full Hyrox Sim (Teams of 2)

Tutu Dash 5K

Broomfield, Colorado, United States

Jun 13, 2026 (Sat)

Running

5K 1.6K