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Colorado 13er (Half Marathon/10k/5k)
Louisville, CO
Sunday, June 7th, 2026
Crazy Legs 10k+ Trail Run
Loveland, CO
Tutu Dash 5K
Broomfield, CO
Saturday, June 13th, 2026
All-Out Summer Breeze
Arvada, CO
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Sunset Trail Running Festival
Boulder, CO
Sunday, June 21st, 2026
Timberview Trail Run
Bellvue, CO
Saturday, June 27th, 2026
4th of July Donut Hole Mile
Saturday, July 4th, 2026
All-Out Dog Days
Westminster, CO
Saturday, July 11th, 2026
The Hero's Journey 5K
Aurora, CO
Saturday, July 25th, 2026
Eltuck Valley 5K - Lory Summer Trail Series
Fort Collins, CO
Tuesday, August 4th, 2026
All-Out Runapalooza
Saturday, August 8th, 2026
Into the Hills Eltuck 10k
Tuesday, August 11th, 2026
Into the Hills Eltuck 5k
Tuesday, August 18th, 2026
Byers Peak Stampede Half Marathon & 5K Run
Fraser, CO
Saturday, August 22nd, 2026
Eltuck Valley 12K - Lory Summer Trail Series
Tuesday, August 25th, 2026
RexRun For PAWSitivity 2026 Trail Run/Walk
Saturday, August 29th, 2026
Black Squirrel Half Marathon
Saturday, September 12th, 2026
Severance Glow 5K Run or Walk
Severance, CO
Friday, September 18th, 2026
All-Out Fall Fest
Saturday, September 19th, 2026
CG Adventure Club - Elevation Everest
Winter Park, CO
Wednesday, September 23rd, 2026
Estes Epic
Estes Park, CO
Saturday, September 26th, 2026
HRCA Wildcat Mountain Trail Races
Littleton, CO
Saturday, October 3rd, 2026
OUTLAST DENVER
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mi...
Windsor, CO
Sunday, October 4th, 2026
Blue Sky Trail Marathon & Half Marathon
Saturday, October 17th, 2026
All-Out Kooky-Spooky
Golden, CO
Sunday, November 1st, 2026
HRCA Backcountry Wilderness Half Marathon
Lone Tree, CO
Saturday, November 7th, 2026
All-Out Fa La La
Saturday, December 5th, 2026
Santa Catch 5k & 10k
Saturday, December 12th, 2026
Resolute Runner 5k
Friday, January 1st, 2027
All-Out Polar Prowl
Saturday, January 9th, 2027
All-Out Mardi Crawl
Saturday, February 6th, 2027
All-Out Spring Fever
Sunday, March 21st, 2027
All-Out Beat the Heat
Saturday, April 24th, 2027
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