Race catalog · Updated nightly
Upcoming running, cycling, triathlon and ultra races, updated nightly from RunSignup, BikeReg and ACTIVE. Missing a race? Submit it
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60 races within 25 mi of Lake Forest, CA
Costa Mesa, CA13 mi away
Good weather · 80/100 Typical: 65° / 57°F · 6% rain
7% slower times (half)past finishers
Huntington Beach, CA21 mi away
Ideal weather · 99/100 Typical: 65° / 58°F · 4% rain
15% slower times (5K)past finishers
San Juan Capistrano, CA10 mi away
Ideal weather · 98/100 Typical: 73° / 56°F · 2% rain
Ladera Ranch, CA11 mi away
Good weather · 84/100 Typical: 82° / 62°F · 0% rain
IRVINE, CA3 mi away
Good weather · 84/100 Typical: 82° / 62°F · 0% rain
Irvine, CA3 mi away
Good weather · 76/100 Typical: 85° / 66°F · 3% rain
Huntington Beach, CA21 mi away
Good weather · 76/100 Typical: 74° / 66°F · 1% rain
11% slower times (5K)past finishers
Anaheim, CA15 mi awayRegistration opens Nov 23, 2026
Ideal weather · 100/100 Typical: 69° / 50°F · 14% rain