San Lorenzo River Trail Run
Race Day Weather
Mild start, warm finish
Runners will face a temperature rise from 58°F to 69°F throughout the race. With humidity at 72% and a light breeze from the W, pacing should be adjusted accordingly. It’s advisable to start conservatively to manage the heat and stay hydrated frequently.
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Race Info
The San Lorenzo River Trail Run is an annual trail race in Santa Cruz, California, organized by Coastal Trail Runs. Held each July, it starts and finishes at Harvey West Park and offers 10K, Half Marathon, 30K, Marathon, and 50K distances, with the marathon run as two half-marathon loops. The course crosses the San Lorenzo River multiple times and passes through coastal redwood forest, stream canyons, and chaparral ridges toward Henry Cowell Redwoods State Park.