Community Listed

Rio Del Lago 100 Mile Endurance Runs

~100 athletes

Auburn, California, United StatesNovember 7, 2026
RegisterRace Website

Select Distance

50K Race
Save Race
November 7, 2026 @ 05:00
50K
Start Time
05:00
Profile
hilly
Elevation
+2920 / -2920 ft
+890m / -890m
Net: +0 ft
Surface
trail
Last Year's Weather
63°F / 53°F
light rain

Why Runners Choose This Race

  • First Class Race management

  • Run through the beautiful Sierra Foothills of California

About this Race

Welcome

The Rio Lago 100 Mile Endurance Run Presented by Altra returns to celebrate our 24th year! This race brings together veterans and novices alike. Whether this is your 1st or 24th Rio 100, we are doing cartwheels to greet you in person on November 1st!

View Official Results
Related Tools
Race Calendar
Browse upcoming races and plan your schedule
Next Race Finder
Find your next goal race with AI recommendations
Post-Race Analyzer
Analyze your race performance with AI insights
Performance Benchmark
Compare your performance against similar athletes

Are you the organizer of this event?

Claim this event to manage it and connect with participants.