April 16 - 17, 2021

Orange Curtain

19211 Studebaker Rd, Cerritos

Cerritos, CA 24hrs, 100K, 50K - Morning, Marathon, 30K, 12hrs, 10K, 6hrs

Registration coming soon

This Event will be Postponed, date TBD

COVID Status

Due to the uncertainty condition of COVID, all charges are on hold until permit is allowed.
Event Date WILL move accordingly.

We are monitoring and contacting with Local Health Department and permit holder regarding COVID Status. With the current social, medical and legal instabilities, it is impossible to guarantee that this event will happen as planned. We will conduct this event only if safe and legal as described by the CDC, state and local authorities.

Newly Added

24 Hour - Start Time: 7:00pm (Friday) - MUST wear reflectorized vest / blinking lights
12 Hour - Start Time: 6:00am (Saturday)
6 Hour - Start Time: 7:00am (Saturday))
Marathon - Start Time: 8:00am (Saturday) - Boston qualifying race (certified course)

Course and weather

10 km out and back, repeated 10 times for 100K, 5 times for 50K, 3 times for 30K, 1 times for 10K.
Surface is asphalt bike path. Approx. 90% of course has dirt path next to bike path.
Course will be in use by other pedestrians (esp. bicycles) and possibly equestrians on race day.
Temperatures may range from 30 degrees to 80 degrees on race day.
Average Temperatures range between 47 and 68 degrees in February.


One aid station (approx. every 5 km), stocked with typical ultra foods.
Entrants may also leave drop bags at start line, passed every 10 km.
Race will NOT provide ibuprofen, aspirin, etc.


Start Time: 6:00am - 14 hours for 100K
Start Time: 7:00am - 13 hours for 50K (Morning)
Start Time: 8:00am - 30K (Local Charity Run)
Start Time: 8:00am - 10K (Local Charity Run)

Race-day entry with cash only
Under 18 permitted with parents' permission and race director's approval.

Local time: 9:21 AM


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