Event details subject to change. Please confirm all information via event website.
Trick or Trot 5K
Apex Center 13150 W 72nd Ave, Arvada, CO, United StatesJoin the Apex Park and Recreation District Foundation for the inaugural Trick or Trot 5K! Runners and walkers of all ages and abilities are all welcome to join us for this Halloween celebration. Dress in your Halloween best for a chance to win prizes for the costume contest. There will be a separate 1-mile Trick […]
YMCA Creepy Crawl 5K
Palmer Lake Regional Park 199 County Line Road, Palmer Lake, CO, United StatesOur annual "spooky themed" race starts at the Palmer Lake Regional Recreation Area. We head down the scenic Santa Fe Trail for a bit then turnaround and finish with a lap around Palmer Lake. This is sure to be a fun day for everyone! Our Kids Monster Dash Fun Run is for kids 12 and […]
Eerie Erie 5K/10K
Erie United Methodist Church 604 Holbrook St, Erie, CO, United StatesThe world-famous Eerie Erie is a Halloween-themed 5k and 10k race that runs through historic downtown Erie and takes advantage of our beautiful trail system that weaves along the Coal Creek open space areas. The 10k passes by scenic Pleasant Hill Cemetery with panoramic views and where friendly spirits can’t wait to visit this year’s […]
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 […]
BOO Run 5K
WestCo Brewing 905 Struthers Ave, Grand Junction, CO, United StatesCostume up and bring your family and friends, we will haunt the town on our 5k route along the river while taking in the beautiful fall colors followed by a big costume contest, seasonal brews, hot chocolate and fun fitness games. Website link: https://grandvalleybrewruns.com/kannah-creek-brewing-company/ FB event page: https://www.facebook.com/events/737334659137680
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.
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