Orange Curtain
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Orange Curtain Run
Orange Curtain Run is an ultramarathon event in Orange County, California held June 19-20, 2026. The event includes multiple distance and timed divisions conducted across paved and dirt bike-path surfaces.
Course information notes a 10 kilometer out-and-back section on asphalt and dirt bike path. Distances and formats offered include both fixed-distance races and time-based challenges.
The event includes these divisions:
- 100K Ultramarathon
- 50K Ultramarathon
- 30K Run
- Marathon (42.2K)
- 10K Run
- 24 Hour and 12 Hour and 6 Hour timed divisions
The marathon is a certified Boston qualifying course and the event holds an IAU Bronze Label for 2025 and USATF sanctioning for 2026. Nighttime or overnight divisions require safety equipment; the 100K and the 24 hour division require reflectorized vests and blinking lights.
Racing spans two days and includes ultramarathon distances up to 100 kilometers as well as shorter road and trail-adjacent runs. The description above reflects event divisions, course surface, certification status, location, and the scheduled race dates. Visit the organization's website for the most recent information.
