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Half Marathon calendar near Simi Valley 2025-2026

Explore the top half marathons near Simi Valley for 2025-2026! We've gathered 46 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
14
Sunday

Santa To The Sea Half Marathon

5 km 6 mi 13 mi
Dec
20
Saturday

Paramount Ranch Trail Runs

Trail Run 10 km 13 mi ... 26 mi 50 km
Dec
21
Sunday

Holly Jolly Half Marathon

5 km 10 km 13 mi
Dec
24
Wednesday

Jingle All the Way Half Marathon

5 km 10 km 13 mi
February 2026
Feb
22
Sunday

Ventura Marathon

13 mi 26 mi
April 2026
Apr
11
Saturday

Nature Made Great Race: Half Marathon

Trail Run 13 mi
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