Miles for Moms

Huston Lake Park 850 S Bryant St, Denver, CO, United States

Join us at the FloCrit campus and surrounding neighborhoods in southwest Denver for the Annual Miles for Moms Run/Walk/Roll! Lace up your running shoes for a fantastic 3-mile fundraiser run, where we celebrate the triumphs of the amazing teen mothers we support. A welcome and kick-off program will start off the event, followed by the […]

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 Lap" The Backyard Ultra is a form of Ultra Trail race where runners must complete 4.167 miles in less than one hour, every hour, until only one […]

$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, and dipping snacks at the post-race party! It’s not just a race, it’s an experience. Register today!

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, music and live entertainment! New to the series is a Full Marathon distance, as well as the Half Marathon and Heavy 10K.

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.

RMRR 12K and 5K

Star K Ranch 16002 E Smith Road, Aurora, CO, United States

Everyone – slow, fast, or in-between –  can win  at RMRR Trophy Series races.  With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great goal to shoot for whatever your speed.  Just show up an hour before the start and we’ll get you ready for your race.  It’s an […]

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 up your sneakers and join us as we come together to make a difference in the lives of those living with Parkinson's disease. Event Highlights: […]

$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 neighborhood surrounding Sierra Elementary! Starting at 10:00am the little ones can participate in a 1K fun run around the Sierra track. Afterwards stay and enjoy […]

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