The Canyons Endurance Runs™ by UTMB®
Auburn, CA
100 mi, 100K, 50K, 20K
Key dates
Registration opens
Nov 14, 2025
Registration closes
Nov 2, 2026
Race day
Nov 7, 2026
Email me updates about Rio Del Lago 100 Mile + 50K Endurance Runs
Registration openings and major changes, like a new date or a cancellation.
Entry transfers
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Listed from Race Roster. Checked Nov 1, 2026.