Rio Del Lago 100 Mile Endurance Run

NOV
7-8
2026
A 100 mile and 50K trail race around Folsom Lake with long elevation, stocked aid stations, drop bag and pacer rules.
7-8 Nov 2026
100 miles 50 kilometers

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Rio Del Lago 100 Mile Endurance Run

Rio Del Lago stages two endurance events on Saturday, November 7, 2026, from Beal's Point at Folsom Lake State Recreation Area in the Sierra foothills, about 40 minutes east of Sacramento. The 100 mile course lists approximately +13,874 ft and -13,874 ft of elevation change and follows a mix of paved bike paths, single-track trail, oak woodland and meadows with multiple river and lake viewpoints.

Distances

  • 100 mile
  • 50K

The 100 mile route begins with a short loop around Beal's Point, then follows the American River Parkway, Johnny Cash Trail, Nimbus Bluffs and numerous single-track segments including Middleridge, Prison Break, Pioneer Express and sections of the Western States Trail. Notable landmarks on course include Folsom Lake, Granite Beach, Twin Rocks, Rattlesnake Bar, Auburn Dam Overlook and No Hands Bridge. The 50K runs the same outbound route to Twin Rocks then returns to Beal's Point.

Aid stations are fully stocked with water, sports drink, assorted gels, soda, hot and cold foods, PB&J and energy bars; night stations offer hot broth and quesadillas at several locations. The event is cupless and runners must carry two water bottles or a hydration pack. Drop bags are issued for specific aid stations and must be reclaimed by noon Sunday or they will be donated. Pacers are allowed only at designated locations and must travel on foot. The 2026 edition serves as a qualifier for the 2027 Western States 100. Visit the organization's website for the most recent information.

100 mi
100 Mile
50 km
50k
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