Ultras in Colorado 2026 | Upcoming Races & Dates

There are 7 ultras in Colorado scheduled for 2026. The next is the NoCo Urban Ultra & Relay in Bellvue on April 12. Colorado ultras run primarily April through September.

NoCo Urban Ultra & Relay

Sun, Apr 12 · Bellvue, CO Bellvue

50 Mile (Individual)50 Mile (Relay)100 Mile (Individual) +1

From $100 Open

High Lonesome 100

Fri, Jul 17 · Nathrop, CO Nathrop

100 Miler

From $465 Open

Never Summer 100km & 60km

Fri, Jul 24 · Walden, CO Walden

Never Summer 60kmThe Double (60km & 100km)Never Summer 100km

From $175 Open 20 spots left

Wild West Relay

Fri, Jul 31 · Fort Collins, CO Fort Collins

Wild West Relay - Get Your Ass Over the Pass - High School TeamWild West Relay - Get Your Ass Over the Pass - 12 person team (7-12 runners)Wild West Relay - Get Your Ass Over the Pass - Ultra team (4-6 runners) +1

From $660 Open

Eltuck Valley 5K - Lory Summer Trail Series

Tue, Aug 4 · Fort Collins, CO Fort Collins

Eltuck Valley 5k

From $25 Open

Flaming Foliage Relay - Idaho Springs to Buena Vista

Fri, Sep 11 · Idaho Springs, CO Idaho Springs

Flaming Foliage Relay - 10 person Team (6-10 runners)Flaming Foliage Relay - Ultra Team (4-5 Runners)Flaming Foliage Relay - Super Ultra (1-3 runners)

From $623 Open

Sawatch Ascent

Sun, Sep 27 · Nathrop, CO Nathrop

50k

From $129 Open

Ultras in Colorado — 2026