California · 100K

Cuyamaca 100k

Cuyamaca 100k is a 100K event held in Julian, California. Its next confirmed date is Saturday, October 2, 2027. About 250 runners take part across all distances.

Race day
October 2, 2027
Location
Julian, CA
Field size
~250 runners

Race details

Date
Saturday, October 2, 2027
Distances
100K
Field size
About 250 runners
Course
~8,800 ft total gain/loss over three loops
Registration
ultrasignup.com
Official website
cuyamaca100k.com

Registration, course & weather

Start time
6:30 AM PDT
Course profile
Loop course; Trail surface; 8800 ft gain, 8800 ft loss (official course data); Not USATF certified

About the Cuyamaca 100k

The Cuyamaca 100K is a Western States-qualifying trail ultramarathon near Julian, CA, run as three distinct loops through Cuyamaca Rancho State Park and Anza-Borrego Desert State Park, summiting Cuyamaca Peak at 6,500 feet.

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Cuyamaca 100k: common questions

When is the Cuyamaca 100k?
The next confirmed date is Saturday, October 2, 2027.
Where is the Cuyamaca 100k held?
In Julian, California.
What distances does the Cuyamaca 100k offer?
100K.
How many people run the Cuyamaca 100k?
About 250 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 Cuyamaca 100k?
Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
What time does the Cuyamaca 100k start?
6:30 AM PDT.
What is the course like at the Cuyamaca 100k?
Loop course; Trail surface; 8800 ft gain, 8800 ft loss (official course data); Not USATF certified.