Orange Curtain

The Orange Curtain Endurance Run is a multi-distance ultramarathon event held in Cerritos, California, featuring races of 10K, 30K, 50K, and 100K, along with marathon and timed events. The course is a flat, fast out-and-back on a combination of asphalt and dirt bike paths along the San Gabriel River, making it suitable for beginners and PR seekers alike. The race is USATF-certified and recognized by the IAU, serving as a Boston qualifier.

It offers aid stations, drop bags, and night-time pacers for safety. The event is part of the SoCal Ultra Series and emphasizes a supportive community atmosphere. Visit the organization's website for the most recent information.