Chilly Willy 5K/10K/Half Marathon - Denver
Littleton, Colorado, United States
Jan, 2027 (TBD)
5k, 10k, Half-marathon
Race Information
It's winter time & it's cold, but don't hibernate! Keep moving because it's a great time to go for a run whether you join live or run virtual! This race takes place at the trails at Chatfield State Park. Finisher Medals for everyone! Only 200 finisher medals will be ordered so sign up or add yours on early! All participants will receive their very own Chilly Willy long sleeve race shirt and Finisher Medal!
Elevation & Celebration: The Denver Summer Bundle is Here!
๐ธ Save 25% When You Bundle!
3 Months. 3 Races. Your Ultimate Summer Challenge.
Denver runners, itโs time to take your summer to new heights! Registration is officially open for the Denver Summer Bundleโthe best way to stay motivated and active all summer long.
The 2026 Denver Lineup:
- ๐ฅ July 11: Heatwave | 5k, 10k, Half, & Relay
- โ๏ธ August 8: Summer Sizzler | 5k, 10k, & 15k
- ๐พ September 5: Golden Harvest | 5k, 10k, & Half
The Summer Bundle โ๏ธ is built for those who want the best value and a consistent summer goal. One registration gets you into all three races with a massive 25% discount! Prefer to take it one month at a time? No problem, individual race registration is open.
Lock in your summer goals today, secure your savings, and letโs show the Mile-High City what weโre made of!
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Race Facts
Race Size: 100 - 500
Elevation: Fast and Flat
Course Type: Road
Boston Qualifier: No
Kids Run: No
Where to Stay
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