All-Out Kooky-Spooky

From All-Out Multicourse Productions

Sunday, October 31, 2027

9:00 AM MDT

Golden, Colorado

$22.20–$69.90 · 6 races

5km, 10km, Half Marathon

Event summary

Get ready for a spooktacular day of fun and fitness at the 16th annual All-Out Kooky-Spooky race, organized by All-Out Multicourse Productions! On Sunday, October 31st, 2027, join us in Golden, Jefferson at the NAAC Stadium for an unforgettable Halloween-themed event. Participants can choose from three exciting race distances: a 5K, 10K, or a half marathon, all set against the stunning backdrop of Ralston Creek Trail and Arvada's Blunn Reservoir.

This festive race not only promotes health and wellness but also supports a great cause, benefiting the Colorado National Kidney Foundation. Don't forget to don your best costume for a chance to win in our official costume contest! Plus, this event is part of the Endless Series with Spring Fever and serves as an official BOLDERBoulder Qualifier. Mark your calendar for a day of thrills, chills, and candy-filled fun at the Kooky-Spooky race!

Races

Half Marathon

Incl. $4.90 Fee & T-shirt

NOTE: the half marathon course is subject to change based on new trails Half marathon athletes will depart the east end of the NAAC parking lot then run the sidewalk on the south side of W 64th Pkwy to reach the 2nd underpass and the path that runs adjacent to the west side of Virgil Wy. Turning right to go east on Ralston Creek Trail, half athletes will complete a 7 mile out & back dogleg before rejoining the counter-clockwise Blunn Reservoir loop. Going under the underpass at the reservoir entrance, athletes will make their way back up onto the 64th sidewalk then return the way they came to the finish line. 8 opportunities to fuel up (+ 3 toilets).

9:00 AM MDT

$69.90

Register
10k

Incl. $3.70 Fee & T-shirt

All-Out's only loop course! 10K athletes will depart the east end of the NAAC parking lot then run the sidewalk on the south side of W 64th Pkwy to reach the east underpass and the path that runs adjacent to the west side of Virgil Wy. Athletes will continue north until just past Tucker Lake, then west and south, following Ralston Creek Trail around Blunn Reservoir going under the west underpass to return they way they came into NAAC and the finish line. 3 opportunities to fuel up (+1 toilet).

9:30 AM MDT

$48.70

Register
5k

Incl. $3.10 Fee & T-shirt

5K athletes will depart the east end of the NAAC parking lot then run the sidewalk on the south side of W 64th Pkwy to reach the underpass and Ralston Creek Trail. Running northwest, with Blunn Reservoir on their right, athletes will turn around and return on this out & back course. 2 opportunities to fuel up.

9:45 AM MDT

$38.10

Register
VIRTUAL Half Marathon
Virtual

Incl. $3.10 Fee & T-shirt

Participate virtually! Get all of the swag, including a finishers medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get modified placement and distance credit towards the Run Amok Championship!

9:00 AM MDT

$38.10

Register
Virtual 10k
Virtual

Incl. $2.50 Fee & T-shirt

Participate virtually! Get all of the swag, including a finishers medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get modified placement and distance credit towards the Run Amok Championship!

9:00 AM MDT

$27.50

Register
Virtual 5k
Virtual

Incl. $2.20 Fee & T-shirt

Participate virtually! Get all of the swag, including a finishers medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get modified placement and distance credit towards the Run Amok Championship!

9:00 AM MDT

$22.20

Register

Organiser's description

Join us for the 16th 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 your Halloween right with an official costume contest, and of course, candy. This event is easily accessible from nearby highways, benefits the Colorado National Kidney Foundation, is part of the Endless Series with Spring Fever, and serves as an official BOLDERBoulder Qualifier!