Orange Curtain 2026

Orange Curtain is a low-frills running event in Cerritos, Orange County, California, offering distances from a 10K up to a 100K. Runners can choose the 10K, 30K, 50K, marathon, 100K, or timed races of 6, 12, or 24 hours. This format accommodates both first-time ultra runners and those aiming for a full day on the course. The marathon is a Boston qualifier, and the longer races embrace the practical, old-school aspects of ultrarunning. The 100K follows a 10-kilometer out-and-back route, repeated 10 times along a 5-kilometer section of asphalt and dirt path. This structure simplifies the race but presents a mental challenge, as participants repeatedly encounter the same terrain, aid stations, and turnaround points. The event maintains modest ceremony, entry fees, fanfare, and merchandise, aligning with its community-driven atmosphere. Reports from the 100K highlight a common ultra lesson: preparation is key, but challenges are inevitable, and completion requires navigating difficulties and persevering.