Race catalog · Updated nightly
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49 races within 25 mi of Lyons, CO
Boulder, CO19 mi away
Ideal weather · 90/100 Typical: 60° / 33°F · 19% rain
34% faster times (5K)past finishers
Boulder, CO14 mi away
Good weather · 80/100 Typical: 60° / 33°F · 19% rain
Loveland, CO24 mi away
Ideal weather · 86/100 Typical: 58° / 33°F · 22% rain
Longmont, CO16 mi away
Ideal weather · 87/100 Typical: 58° / 32°F · 18% rain
14% faster times (5K)past finishers
Loveland, CO24 mi away
Ideal weather · 85/100 Typical: 56° / 31°F · 20% rain
Loveland, CO24 mi away
Good weather · 82/100 Typical: 54° / 29°F · 20% rain
Loveland, CO24 mi away
Good weather · 76/100 Typical: 48° / 26°F · 19% rain
15% slower times (5K)past finishers
Louisville, CO23 mi away
Good weather · 78/100 Typical: 49° / 26°F · 18% rain
Boulder, CO14 mi away
Fair weather · 57/100 Typical: 36° / 17°F · 30% rain
16% faster times (5K)past finishers
Loveland, CO24 mi away
Good weather · 76/100 Typical: 48° / 26°F · 19% rain
Loveland, CO24 mi away
Good weather · 72/100 Typical: 44° / 24°F · 17% rain
7% faster times (5K)past finishers
Longmont, CO22 mi away
Tough weather · 51/100 Typical: 45° / 24°F · 18% rain
Lyons, CO0 mi awayRegistration opens Dec 11, 2026
Tough weather · 40/100 Typical: 27° / 9°F · 38% rain