Event details subject to change. Please confirm all information via event website.
MonsterDASH
Sloan's Lake Park 1700 Utica Street, Denver, CO, United StatesColorado's Favorite Halloween Runs....Each year the Theme Changes!! 2025 brings...SCARY CLOWNS / Circus Theme! Our best theme yet. Saturday Race is in Denver at 9:30am... then Sunday is in Louisville at 3:00pm on trails. This festival on Sloan's Lake, brings scary music, tons of Blow Ups, Carnival Games and Scary Clowns. The 5k and 10k […]
Halloween Fun Run
Clear Creek Middle School 320 Chicago Creek Rd, Idaho Springs, CO, United StatesThis Halloween, join us for a spooky 5k or 1 mile loop through the Pioneer Cemetery in Idaho Springs!! Try for a PR or take a leisurely stroll as you trick or treat with the ghouls in the graveyard. DON'T FORGET TO DRESS UP! Our Halloween costume contest gives you even more reason to rock […]
Canceled Redrum Fun Run
Lincoln Park - Greeley 829 10th Ave, Greeley, CO, United StatesGet ready to lace up your running shoes and unleash your spooky spirit at the Redrum Costume Fun Run 2025! Join hundreds of ghosts, goblins, superheroes, and wacky characters as we dash through the heart of downtown Greeley in a festive 3K that’s more about fun than speed. This family-friendly event welcomes all ages and […]
Quick Draw @ McGraw Trail Race
McGraw Memorial Park 39 Wellington Lake Rd, Bailey, CO, United StatesCome one, come all! And join us in the "Quick Draw @ McGraw" 2 Mile Trail Run, organized and hosted by CRATES Colorado and benefitting McGraw Memorial Park. This challenging trail course located directly south of the Keystone Bridge located inside McGraw Park will give runners of all skill levels a true test of their […]
Spooky Sprint 5K
Pueblo YMCA 3200 E. Spaulding Ave, Pueblo, CO, United StatesThis eerie evening race winds through a chilling course at the YMCA of Pueblo. The thrilling Halloween themed race is perfect for all ages and fitness levels. Recommended for those who want to have a hauntingly good PR. The best part of Spooky Sprint is you get to wear your costume! Whether you’re running as […]
Narrowleaf Lake Run
Boyd Lake State Park 3720 N Co Rd 11C, Loveland, CO, United StatesBrisk 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 […]
The Stride 5K/10K
Littleton Museum 6028 S. Gallup St., Littleton, CO, United StatesYou’re invited to The Stride, a family-friendly 5K, 10K, Kids Fun Run, and Wellness Expo in Littleton on October 24th. Benefitting the Littleton Public Schools Foundation, this event brings together the community for a great cause.
Odyssey Odyssey 5K
Great Lawn Park 101 Yosemite St, Denver, CO, United StatesThe 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 StatesEAPL's Zombie fun run 5K is on Sunday, October 26th at 10am! Run, walk, crawl family event supporting the Evergreen Animal Protective League (EAPL). Bring your family (doggies are welcome)! We strongly encourage your spookiest, ghoulish, Halloween gear! Come out and HOWL with EAPL. $30.00 Registration (through 10/24) Children 12 and under $15.00 (through 10/24) […]
MonsterDASH
Louisville Community Park 955 Bella Vista Dr, Louisville, CO, United StatesColorado's Longest running Halloween race....since 2006, we have changed the THEME to this race year after year! This 2025 Theme is: Scary Clowns & Circus We wil have scary music and a CIRCUS Themes Expo at the start/finish. Hired Clowns on site and a circus atmosphere with Games, Hot Dogs, Pop Corn and Drinks. Stay […]
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