Idaho’s Ugliest Sweater Run, brought to you by The Dirty U

The Boise Ugly Sweater 5K, organized by The Dirty U, returns on December 5th in the heart of downtown Boise. Participants will meet at Payette Brewing Company for this festive run that celebrates community and charity.
Race morning finds runners warming up under the cozy warmth of Payette Brewing Company’s indoor spaces. This setting blends the brewery's heat with crisp winter air, creating a welcoming atmosphere as participants prepare to tackle their 5K route through Boise’s vibrant downtown area. Early-risers can enjoy the quiet surroundings around the brewery until race time.
This event has been a beloved tradition since its inception in [year], drawing thousands of participants each year who contribute to local scholarships and support educational opportunities for underprivileged children in Idaho. The course begins at Payette Brewing Company on Broadway Street, meanders through the Boise Arts District before looping back to the starting point. Expect minimal elevation changes with some gentle hills adding variety.
On race morning, temperatures will range between -0.9°C and 6.7°C, feeling around 0.6°C due to wind chill. Humidity is at an average of 76%, making conditions feel milder than the raw temperature suggests. There's a slight chance of light rain or snow with only 0.3mm expected.
The race commences at 10:00 AM, and registration fees are $38.11 per participant. Register online through https://raceroster.com/events/2026/119454/idahos-ugliest-sweater-run-brought-to-you-by-the-dirty-u before the deadline to secure your spot.
Bibs can be picked up at Payette Brewing Company on December 4th from noon to 7 PM or the day of race start time from 9 AM to 6 PM. Participants under 18 must bring a valid ID for age verification and their registration confirmation email.
This event is open to runners of all ages, with no minimum or maximum age requirements beyond standard minor restrictions. Join this unique run and contribute to something bigger than personal achievement—supporting young minds as they pursue their dreams through local scholarships and educational opportunities.
5K  •  Start: 10:00 AM  •  Fee: $38.11