Ruth Anderson Memorial Endurance Run
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Ruth Anderson Memorial Endurance Run
The event takes place in San Francisco at the Lake Merced Blvd Parking Lot (North) on 10/10/2026. The listed races use a measured 4.5 mile loop around Lake Merced as the course.
All races are assigned an event type and a distance. Distances offered include:
- 50K
- 50 Miles
- Coastal Testing : 4.5 Miles
Registration for the listed events is free. The two longer races are classified as ultramarathon events and the shorter Coastal Testing race is listed as a running race. The setting is the Lake Merced loop, providing a repeated‑lap format for competitors and support personnel to plan around the single measured loop. Visit the organization's website for the most recent information.
