Course
Starts at Jefferson County's NAAC Stadium on W 64th Parkway in Golden at 9:00 am and follows the Ralston Creek Trail past Arvada's Blunn Reservoir, with views out to the Front Range. The 10K is run as a loop, and all distances carry aid stations along the way.
Key dates
- !RegistrationOpen now
- ★Race daySun 1 Nov 2026
About
Join us for the 15th annual Kooky-Spooky race, featuring a 5K, 10K, and half marathon. Starting from Jefferson County's NAAC Stadium , the courses wind along the scenic Ralston Creek Trail and by Arvada's Blunn Reservoir. Celebrate Halloween by wearing your costume for our official contest, and enjoy that extra hour of sleep as daylight saving time ends!
Save All-Out Kooky-Spooky to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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November Trophy Series – 15Km and 5Km at Prairie Gateway Park
Part of RMRR's season-long scoring series
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Rim Rock Marathon & Half Marathon
Sweeping canyon views along famous Rim Rock Drive in Colorado
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Bell Ringer 2-Miler
Loveland's Veterans Day bell-ringing tradition, on foot
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City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
Rocky Mountain views over Denver's City Park lake
A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.