Hallowiener 5K

South Main Square 926 S Main St, Buena Vista, CO, United States

5K: Join us for a Halloween-themed 5K!  Yes, that means we want you to run in your best costume!  Runners will start at South Main in Buena Vista.  You should be on the lookout for some spooky scenes along the river.  This run is stroller friendly!  After enjoying a little jaunt around the town trails, […]

Hoofin’ It Through the Hollows 5K

deKoevend Park 6315 S. University Blvd., Centennial, CO, United States

Runners of all ages and abilities, families, and dogs are all welcome to join us for this Halloween celebration!  Dress in your Halloween best for a chance to win prizes at the pre-race the costume contest before the race at 5 pm.

$20.00

Narrowleaf Lake Run

Boyd Lake State Park 3720 N Co Rd 11C, Loveland, CO, United States

Brisk autumn running in Colorado – OH YEA! Join us for a family fun event with three distance options at the beautiful Boyd Lake State Park venue. What’s a “Narrowleaf” you ask? The Narrowleaf Cottonwood Trees are the most densely populated tree species at Boyd Lake State park. We thought the name was fitting and […]

$25 – $55

All-Out Kooky-Spooky

Jefferson County's NAAC Stadium 19500 W 64th Pkwy, Golden, CO, United States

From the base of Table Mountain and Colorado's spectacular foothills, All-Out Multicourse presents Kooky-Spooky from Jefferson County's NAAC Stadium… easily accessible from several nearby highways. Along with its Endless Series sidekick in March, Spring Fever, these 5K, 10K & Half Marathon courses will hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail and will […]

Odyssey Odyssey 5K

Great Lawn Park 101 Yosemite St, Denver, CO, United States

The Odyssey Odyssey Fun Run is entering its 9th year. It has always been centered around having fun and exercising our bodies.  It is an all-inclusive event, which is why all the races are FREE to participate in.  We will be accepting donations for entrance fees but that is not a requirement for participation.  The […]

EAPL Zombie Run 5K

Buchanan Park Recreation Center 32003 Ellingwood Trail, Evergreen, CO, United States

Get your spook on…run, walk, creep or crawl for a ghoulish good time. Benefiting the Evergreen Animal Protective League. Scary Good Bake Sale * Spirited Music * Costume Contest for 2 & 4 legged participants

$30

MonsterDASH

Louisville Community Park 955 Bella Vista Dr, Louisville, CO, United States

The Aliens are returning to Louisville in 2024 after an unsuccessful landing bc of snow in 2023....  all 2023 runners will return as comp'd runners....so our field will be large...come early and come in costume.  Theme is ALIENS and ASTRONAUTS. 65% come in costume...and this is a AFTERNOON RACE:  3:00pm Start. Runners receive a Beanie […]

$35.00

Bridge Runner Ultra

Centennial Park - Cañon City Cañon City, CO, United States

This single loop 50k starts in the historic mining town of Canon City, Colorado. Runners' journeys will begin along the beautiful Arkansas River and travel through the historic granite blasted tunnels along Tunnel Drive. From here, runners will begin their steep climb to the highest point of the course at 7,109’ feet. At the top […]

Colorado 24 Hour Run

Colorado Youth Outdoors 4927 County Rd 36, Fort Collins, CO, United States

Welcome to the Colorado 24 Hour Run! We aim to provide a fun, welcoming race experience that allows everyone to find a challenge, no matter where you’re at on your running journey. Want to see how far you can go in 6, 12 or 24 hours? Or achieve a new furthest distance? What about setting […]

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