In 55 days · Sat, Dec 5, 2026
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When
Saturday, December 5th, 2026
Where
733 S Pioneer St, Boise ID
Distance
5K
Typical weather
26–41°F · some rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2025
33–41°F
rain
2024
24–35°F
dry
2023
42–56°F
dry
2022
23–36°F
dry
2021
29–47°F
dry
2020
18–40°F
dry
2019
28–42°F
dry
2018
11–29°F
dry
2017
23–38°F
dry
2016
22–34°F
dry
Best months to race in Idaho →
Race-day forecast says layers
26°F at the start.
Gloves, ear warmers, throwaway layers, hand warmers — delivered before race day.
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About this race
Event Overview
- Event Name: Idaho's Ugliest Sweater Run
- Date: December 5, 2026
- Location: 733 S Pioneer St, Boise, ID
- Organized by: The Dirty U
Additional Information
- Website: Visit the race page
Course map
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