Races›United States›California›Rio Del Lago 100 Mile Endurance Run
Folsom, CA, seen from above
Saturday 7 November 2026

Rio Del Lago 100 Mile Endurance Run

Folsom, California · United States
UltraLake90% trailEntries open

'Rio del Lago'—Spanish for river of the lake

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Course

Starts and finishes at Beal's Point in Folsom Lake State Recreation Area, linking the American River 50 and Way Too Cool 50K trails through oak woodland, creeks and switchbacks with about 13,874 ft of gain. Landmarks include the Johnny Cash Trail, Nimbus and Hazel Bluffs, the 109-year-old No Hands Bridge and Cardiac Hill. Far more trail than pavement; 50K runners turn at Twin Rocks.

100 Mile100 mi
50K50 km

Key dates

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About

Rio Del Lago—Spanish for ''river of the lake''—is a 100-mile and 50K trail endurance run near Folsom Lake and the American River in the Sacramento region of California.

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