When is Ugly Sweater 5K?

Ugly Sweater 5K takes place on Dec 20, 2026. That's in 8 months.

Where is Ugly Sweater 5K located?

Ugly Sweater 5K is held in Denver, Colorado, United States.

What distances are available at Ugly Sweater 5K?

Ugly Sweater 5K offers the following distances: 5K.

How do I register for Ugly Sweater 5K?

You can register for Ugly Sweater 5K through the official registration page.

What is the typical weather for Ugly Sweater 5K?

Based on historical data, you can expect temperatures between 16°F and 43°F on race day. There's approximately a 1% chance of precipitation.

Ugly Sweater 5K (5K) - Dec 20, 2026 | Denver, CO

Lace-up your most garish holiday attire for the Ugly Sweater 5K, set to transform Denver's picturesque Washington Park into a festive spectacle on Sunday, December 20, 2026. This popular event invites runners and walkers of all ages and abilities to embrace the holiday spirit on a flat, fast, and USATF-certified 5K course, offering a scenic tour through one of Denver's largest and most beloved parks. With a minimal elevation gain, it's an ideal route for chasing a personal best or simply enjoying a cheerful stroll. Typical race day conditions in late December feature crisp air with highs around 43°F and lows near 16°F, with only a 1% chance of precipitation, creating a truly wintry backdrop for your holiday run.

What truly sets the Ugly Sweater 5K apart is its lively, party-like atmosphere, where runners are encouraged to don their most outrageous holiday sweaters, complete with tinsel, bows, and festive embellishments. The race kicks off from the Mount Vernon Garden within Washington Park, and participants will find an aid station stocked with water and Gatorade at the 1.5-mile mark to keep spirits high. Crossing the finish line brings its own rewards, including a unique ugly sweater race medal, a themed shirt, and a vibrant finish line expo featuring food, cookies, and various vendors. This event also boasts professional chip timing, free photo downloads, and is an official BOLDERBoulder Qualifier, making it a perfect blend of competitive spirit and holiday fun. Runner reviews consistently praise the fun atmosphere and the high level of participation in the ugly sweater contest, making it a beloved holiday tradition in Denver, rain or shine.