SoCal River Marathon
Race Day Weather
Cool start, warming finish
Runners will face a cool start at 54°F, with temperatures rising to 62°F by the finish. Winds will be light at 8 mph, becoming a headwind from miles 11 to 26, which may challenge pacing. Humidity is moderate at 58%, so runners should consider adjusting their pace conservatively. The temperature will feel cooler in the early miles, but hydration will be key as the finish approaches.
The finish is 22 miles from the start, so we look at it at 2 points, not just the start line. In a typical year, at 9:00/mi, you start at 54° and finish around 11:55 AM in 62°.
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Race Info
The SoCal River Marathon starts in Yorba Linda and finishes at Huntington Beach State Park, following the paved Santa Ana River Trail on a net-downhill course that passes near Disneyland and Angel Stadium before reaching the coast. It is a Boston Marathon qualifier and also offers a half marathon, 10K and 5K on the same morning.