Canceled It’s Fall Y’all 5K

Carpenter Park 3498 E 112th Ave, Thornton, CO, United States

You're going to FALL in love with the It's Fall Y'all 5K at City Park in Westminster. Join 3W Races for this annual event on October 2nd, which includes a 5K run/walk, doggie costume contest, caramel apples at the finish and more!

$35 – $55

Rocky’s Backyard Ultra

YMCA of the Rockies - Estes Park 2515 Tunnel Rd., Estes Park, CO, United States

Rocky's Backyard Ultra is a challenging Ultra Trail race hosted in beautiful Estes Park, Colorado. We strive to host a challenging event that is welcoming and motivating to all. "One More […]

$140

Hot Chocolate 15K/10K/5K

Washington Park - Denver 701 S Franklin St, Denver, CO, United States

Start and finish at Civic Center Park amongst Denver's biggest chocolate aficionados. All participants receive a technical running quarter zip with registration. Runners can also enjoy hot chocolate, chocolate fondue, […]

Windsor Marathon

The Island at Pelican Lakes 1620 Pelican Lakes Point, Windsor, CO, United States

Welcome to the annual Windsor CO Race! This year's event will start and end at The Island at Pelican Lakes in Water Valley, with a great after party including beer, […]

Run Crazy Horse Marathon

Crazy Horse Memorial Ave of the Chiefs, Crazy Horse, SD, United States

Run from the shadows of the world's largest Mountain Carving, Crazy Horse Memorial, to the Heart of the Black Hills, South Dakota to finish in Hill City!

Spooky Sprint Half Marathon

Goose Gossege Park 3950 Mark Dabling Blvd, Colorado Springs, CO, United States

Join us for the annual Spooky Sprint 5k/10k & Half Marathon! A fun, Halloween-themed event that is perfect for the whole family.

Michael J. Fox Foundation’s Denver Run/Walk

City Park - Denver 1700 N York St, Denver, CO, United States

We're excited to invite you to be a part of The Michael J. Fox Foundation’s Denver Run/Walk, a community event dedicated to raising awareness and funds for Parkinson's research. Lace […]

$20 – $65

Strides for Sierra 5K

Sierra Elementary 7771 Oak St, Arvada, CO, United States

Join us Sunday October 6th at 9:00am for the Second Annual Strides for Sierra 5K run/walk fundraiser. Get your sweat on running or enjoy a leisurely stroll through the beautiful […]

Event Series PPRR Fall Series

PPRR Fall Series I

Bear Creek Regional Park 245 Bear Creek Road, Colorado Springs, CO, United States

The Fall Series consists of four trail races in four different city/county parks. The trails range from well-maintained to rocky with tree roots. Each event is a unique challenge at […]

Indian Creek Fifties

Indian Creek Campground 2499 Pine Creek Rd, Sedalia, CO, United States

The Indian Creek Fifties takes advantage of the challenging and little used terrain just southwest of the Denver Metro area. Loop 1 climbs to 8000′, and quickly flows down into […]

Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.