California · 100 Miler Crewed · 100 Miler Solo
San Diego 100
San Diego 100 is a 100 Miler Crewed and 100 Miler Solo event held in Lake Cuyamaca, California. Its next confirmed date is Friday, April 30, 2027. About 200 runners take part across all distances.
- Race day
- April 30, 2027
- Location
- Lake Cuyamaca, CA
- Field size
- ~200 runners
Race details
- Date
- Friday, April 30, 2027
- Location
- Lake Cuyamaca, California
- Distances
- 100 Miler Crewed, 100 Miler Solo
- Field size
- About 200 runners
- Course
- 12966 ft gain
- Registration
- ultrasignup.com
- Official website
- sandiego100.com
Registration, course & weather
- Registration status
- Registration status as last checked October 18, 2026: opens soon
- Start time
- 6:00 AM PDT
- Course profile
- Loop course; Road surface; 12966 ft gain, 12966 ft loss (estimated from third-party elevation data)
About the San Diego 100
San Diego 100 in Lake Cuyamaca, CA.
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San Diego 100: common questions
- When is the San Diego 100?
- The next confirmed date is Friday, April 30, 2027.
- Where is the San Diego 100 held?
- In Lake Cuyamaca, California.
- What distances does the San Diego 100 offer?
- 100 Miler Crewed and 100 Miler Solo.
- How many people run the San Diego 100?
- About 200 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the San Diego 100?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the San Diego 100?
- Registration status as last checked October 18, 2026: opens soon.
- What time does the San Diego 100 start?
- 6:00 AM PDT.
- What is the course like at the San Diego 100?
- Loop course; Road surface; 12966 ft gain, 12966 ft loss (estimated from third-party elevation data).
Plan this race in RaceRove
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