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HRCA St. Patrick's Day 5K
Highlands Ranch, CO
Saturday, March 14th, 2026
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8th Annual ☘️ShamROCK Stampede 5k & RRCA 10k St...
Castle Rock, CO
St. Paddy's Day Run
Berthoud, CO
Lucky Leprechaun 5K
Boulder, CO
Sunday, March 15th, 2026
Central Park 5k
Denver, CO
Sunday, March 22nd, 2026
All-Out Spring Fever
Golden, CO
Erie Easter Bunny Hop
Erie, CO
Saturday, April 4th, 2026
Dash for Detection: Oral Cancer Awareness 5K
Saturday, April 11th, 2026
Rockin on the River 5K
Littleton, CO
Platte River Half-Marathon, Relay & 5k
Sunday, April 12th, 2026
Spring Fling Prairie Dog Half, 10k, & 5k
Arvada, CO
Hop Into Spring 5K - Denver
Donut Dash
All-Out Beat the Heat
Westminster, CO
Saturday, April 18th, 2026
DoNot Stop Half Marathon (5k/10k) - Denver
Sunday, April 19th, 2026
Fairmount Fit Fest
Unicorn 5k (Denver-East)
Sunday, April 26th, 2026
Blue Heron Half & 5K
Brighton, CO
Dash & Dine 5k
Tuesday, April 28th, 2026
Friends of the National Center Science Stride 5K
Friday, May 1st, 2026
Adams County Foster Care 5K Run/Walk and 1 mile...
Saturday, May 2nd, 2026
22nd Annual Bob Turner Classic 5K Run/Walk
CollaBEERation 5k & Brew Fest Party
Longmont, CO
High Line Canal 5K/10K Run
Centennial, CO
Longmont Half & 5k (LM Half)
Sunday, May 3rd, 2026
Rise Against Suicide - Emerge 5K
RMRR May Trophy Series
2026 Altitude Elementary Moose Mudder
Aurora, CO
Frank Shorter Track Classic
Dash & Dine 5k #2
Tuesday, May 5th, 2026
2026 Five Star 5K, Mile of Smiles, and Wellness...
Saturday, May 9th, 2026
Parker Parks and Recreation Miles over the Mead...
Parker, CO
HRCA Mother's Day 5K
Cherry Creek Race for the Watershed 2026
Denver Mother's Day 5K
Sunday, May 10th, 2026
Hometown Half Marathon & 5k/10k - Denver
Colorado Women's Classic - Westminster
Gluten Free Gallop 5K
Saturday, May 16th, 2026
Miles for Smiles 5K
Sunday, May 17th, 2026
Farish Trail Race
Woodland Park, CO
Saturday, May 23rd, 2026
Flamingo Day 5K
Sunday, June 7th, 2026
Colorado 13er (Half Marathon/10k/5k)
Louisville, CO
DU Dash Colorado
Palmer Lake, CO
Treat Trot Denver
Thornton, CO
Saturday, June 13th, 2026
All-Out Summer Breeze
Stepping Stone 5K
Muddy Dash | Denver 2026
Dacono, CO
Saturday, June 20th, 2026
Parker Parks and Recreation Dash Across the Dam...
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