Ruth Anderson Memorial Endurance Run
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Ruth Anderson Memorial Endurance Run
The Ruth Anderson Memorial Endurance Run is scheduled for October 9, 2027 and marks the event's 40th running since 1986. The event takes place in San Francisco with Race HQ at Lake Merced Blvd and Sunset Blvd.
Distances offered include:
- 100 km
- 50 miles
- 50 km
- Marathon
The course is a loop of 4.475 miles on a paved bike path with dirt shoulders. Aid is provided once per loop at the start/finish area. Elevation figures for the course include a total climb of 2,488 feet, total descent of 2,555 feet, with course high and low points near 94 feet and 29 feet respectively; the start and finish elevations are listed at 72 feet.
For the 50 mile distance there are lap cutoffs: runners must complete 7 laps (31.1 miles) by 7.5 hours into the race and 10 laps (44.5 miles) by 10 hours 40 minutes into the race. The event publishes age group course records and historical results going back to the inaugural 1986 running.
The race lists a race day registration option for an extra $10 if the event is not full. The 50K and 50M courses are noted as USATF certified. The event is sponsored by T8 and supported by SF Rec & Parks. Visit the organization's website for the most recent information.
