Cerritos, CA
Saturday, June 20, 2026
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The Orange Curtain Marathon offers a flat, fast, and highly predictable course that emphasizes consistency over technical difficulty. It features a certified Boston Marathon qualifying route with minimal elevation change, accumulating roughly 132 feet of gain and loss over the full distance. The primary challenge stems from the repetitive, mental nature of the multi-lap structure rather than steep gradients or varied terrain.
The race operates on a 10-kilometer out-and-back course layout along a 5-kilometer segment of the San Gabriel River bike path, spanning areas near Cerritos, Lakewood, and Long Beach, California. Marathon runners complete this loop multiple times to reach the 26.2-mile distance. The terrain consists of a paved asphalt bike path with a parallel dirt trail running alongside roughly 90% of the course, giving participants a choice of surface for most of their run.
The course is completely open to the public during the race, meaning runners will share the trail with everyday cyclists, pedestrians, and occasionally equestrians. Runners must remain mentally disciplined to handle the repetition of the out-and-back loop and prepare for exposed conditions, potential midday temperature rises, and wind along the river basin.
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Race Dates
2027: TBDCourse Information
Profile: Very FlatRace Day Weather
Mean Temp.: 69°F (20°C)PR Score & Course Score
PR Score: 97.03Race Size
2026: No ResultsBQ Percentages
2026: N/AMiscellaneous Information
Pace Groups?: No
Race Day Temperatures |
High: 74°F (23°C) |
Race Start Conditions |
64°F (18°C) |
PR Score |
96.91 |
Course Score |
99.73 |
The Orange Curtain Marathon was the 495th largest marathon in the U.S. in 2025 based on the number of finishers. In 2024, it ranked as the 480th largest marathon in the U.S..
In 2025, 2.6% of Orange Curtain Marathon finishers achieved Boston Marathon qualifying times. In 2024, 2.4% of finishers qualified for Boston.
Based on its percentage of Boston Qualifiers (BQs), the Orange Curtain Marathon ranked 386th among marathons in the U.S. in 2025 and 387th in 2024. In California, it ranked 27th in 2025 and 25th in 2024. These rankings provide a useful benchmark for runners comparing Boston Marathon qualifying potential across different races.
The Orange Curtain Marathon has a Course Score of 99.73, ranking it as the 61st fastest marathon course in the U.S. and the 7th fastest marathon course in California.
Typical race-time temperature and humidity levels are above the ideal range for optimal marathon performance. Combined with the course profile, this gives the Orange Curtain Marathon a PR Score of 97.03. The PR Score ranks the Orange Curtain Marathon as the 351st best marathon in the U.S. for running a Personal Record (PR) and the 27th best marathon for a PR in California.
Together, these rankings provide a quick snapshot of how the Orange Curtain Marathon compares with other marathons in the U.S. and California for speed, PR potential, Boston Marathon qualifying success, and overall participation.
Max Elevation: 51 feet (15m)
Min Elevation: 26 feet (7m)
Elevation Gain: 132 feet (40m)
Elevation Loss: 132 feet (40m)
Course updated 05/13/2026
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