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Trail Running calendar near Modesto 2025-2026

We have found 63 Trailruns within 80 miles of Modesto. See below where and when you can find the races.

Dick Collins Firetrails

Castro Valley - 59 mi from Modesto

Autumn trail festival at Lake Chabot Marina in Castro Valley offering 100k, 50 mile and marathon distances through classic East Bay parkland. Expect challenging terrain, a friendly community vibe, and generous finisher swag for all distance..

November 2026

Rio Del Lago 100 Mile Endurance Run

Granite Bay - 78 mi from Modesto

Join the 25th Rio 100 and 5th Rio 50K at Beals Point in Granite Bay on November 7 and 8, 2026. Scenic Folsom Lake and Johnny Cash Trail routes, strong on course support, and festive food and beer create an unforgettable endurance weekend.