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Trail Running Calendar near Fontana 2025-2026

Explore the top trail runs near Fontana for 2025-2026! We've gathered 28 exciting races in the area. Check out our detailed list below to find your next local race.

October 2025
Oct
19
Sunday

Mission Inn Run

5 km 10 km 13 mi
Oct
31
Friday

Machete Trail Madness 100 Miler

Trail Run 10 mi 50 mi 100 mi
November 2025
Nov
1
Saturday

Wildwood Canyon Trail Run

Trail Run
December 2025
Dec
21
Sunday

Reindeer Run Half Marathon - Riverside

5 km 10 km 15 km 13 mi
January 2026
Jan
10
Saturday

Citrus Heritage Run

5 km 10 km 13 mi
Jan
24-25
Sa - Su

Socal Spartan Event Weekend

Obstacle Run 5 km 10 km 21 km
May 2026
May
23-24
Sa - Su

Nanny Goat

Trail Run 6 hr 12 hr 100 mi 24 hr
November 2026
Nov
7
Saturday

Saddleback Marathon

Trail Run 10 km 13 mi 26 mi
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