Upcoming Races Near Northglenn, CO

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For The City Network 5K

Greeley, CO

Saturday, September 12th, 2026

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The Denver 5k

Denver, CO

Saturday, September 12th, 2026

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Jungle Dash

Loveland, CO

Saturday, September 12th, 2026

1 Mile

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Honey Bee Hustle

Loveland, CO

Sunday, September 13th, 2026

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Tiger Prowl 5K

Denver, CO

Sunday, September 13th, 2026

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9/11 Heroes Run - Denver, Colorado

Denver, CO

Sunday, September 13th, 2026

1 Mile

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RMRR September 5k/10k

Thornton, CO

Sunday, September 13th, 2026

10K

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RMRR Fall Marathon Training Series #2

Thornton, CO

Sunday, September 13th, 2026

Ultra

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Buffalo Bicycle Classic

Boulder, CO

Sunday, September 13th, 2026

Ultra

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Severance Glow 5K Run or Walk

Severance, CO

Friday, September 18th, 2026

Trail

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Miles 4 Madison 5K & 1K

Littleton, CO

Saturday, September 19th, 2026

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All-Out Fall Fest

Westminster, CO

Saturday, September 19th, 2026

Half

10K

Trail

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Gummball 5K

Brighton, CO

Saturday, September 19th, 2026

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Denver: Walk With Autism and Resource Fair

Denver, CO

Saturday, September 19th, 2026

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20th Annual Golden Gallop

Golden, CO

Sunday, September 20th, 2026

10K

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Farmers 5000

Wheat Ridge, CO

Sunday, September 20th, 2026

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Fall Equinox

Fort Collins, CO

Sunday, September 20th, 2026

Half

Fast

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CG Adventure Club - Elevation Everest

Winter Park, CO

Wednesday, September 23rd, 2026

Trail

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NIGHT NATION RUN - DENVER

Commerce City, CO

Saturday, September 26th, 2026

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HRCA Oktoberfest 5K

Littleton, CO

Saturday, September 26th, 2026

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Parker Parks and Recreation So Long to Summer 5...

Parker, CO

Saturday, September 26th, 2026

10K

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Estes Epic

Estes Park, CO

Saturday, September 26th, 2026

Ultra

Trail

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Runway 5K - Run for the Angels

Broomfield, CO

Saturday, September 26th, 2026

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Joy & Justice 5k

Timnath, CO

Sunday, September 27th, 2026

1 Mile

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RMRR Fall Marathon Training Series #3

Thornton, CO

Sunday, September 27th, 2026

10 Miles

Ultra

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Running for Children's Rights to Both Parents -...

Boulder, CO

Sunday, September 27th, 2026

Half

10K

View details for race Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado

Colorado Coyotes Youth XC Invitational

Cenennial, CO

Sunday, September 27th, 2026

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I Can 5k

Thornton, CO

Saturday, October 3rd, 2026

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Homecoming 5K - Colorado State University

Fort Collins, CO

Saturday, October 3rd, 2026

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Spooky Sprint - Denver

Denver, CO

Saturday, October 3rd, 2026

1 Mile

10K

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Lafayette Music Fest -5K - 10K

Lafayette, CO

Saturday, October 3rd, 2026

10K

View details for race Lafayette Music Fest -5K - 10K

HRCA Wildcat Mountain Trail Races

Littleton, CO

Saturday, October 3rd, 2026

10 Miles

10K

Trail

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OUTLAST DENVER

Littleton, CO

Saturday, October 3rd, 2026

Trail

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Spooky Sprint - Denver

Littleton, CO

Saturday, October 3rd, 2026

1 Mile

10K

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PRA Miner Gold Rush

Broomfield, CO

Saturday, October 3rd, 2026

1 Mile

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The Ruff Run

Loveland, CO

Saturday, October 3rd, 2026

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Big Waves Family 5K run/walk Presented by Brumate

Westminster, CO

Saturday, October 3rd, 2026

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Windsor Marathon, Half Marathon, 10k, 5k & 1 Mi...

Windsor, CO

Sunday, October 4th, 2026

Marathon

Half

10K

Trail

View details for race Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

RMRR October Trophy Series

Aurora, CO

Sunday, October 4th, 2026

Fast

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Suffer Better 10th Annual Fall Trail Runs

Pine, CO

Saturday, October 10th, 2026

Ultra

Trail

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The Long View Marathon

Fort Collins, CO

Saturday, October 10th, 2026

Marathon

Half

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Footsteps for Families 5k Fun Run & Concert

Windsor, CO

Saturday, October 10th, 2026

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Westy Half & 5k

Westminster, CO

Sunday, October 11th, 2026

Half

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Blue Sky Trail Marathon & Half Marathon

Fort Collins, CO

Saturday, October 17th, 2026

Trail

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Living Water 5K and Family Fun Run

Denver, CO

Saturday, October 17th, 2026

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The Great Trailhead Foot Race 5 & 10 Miler

Lakewood, CO

Saturday, October 17th, 2026

10 Miles

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Indian Creek Trail Runs

Sedalia, CO

Saturday, October 17th, 2026

Trail

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Race to Cure Sarcoma Denver

Denver, CO

Saturday, October 24th, 2026

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Apex Foundation Trick or Trot 5K & Halloween Hunt

Arvada, CO

Saturday, October 24th, 2026

1 Mile

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Ghosts and Goblins 5K/10K

Denver, CO

Sunday, October 25th, 2026

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