San Lorenzo River Trail Run

Embark on an unforgettable trail running adventure at the San Lorenzo River Trail Run, set for Saturday, July 11, 2026, in the stunning landscapes of Santa Cruz, California. This challenging and scenic event offers distances for every ambition, including a 10K, Half Marathon (13.1M), 30K, Marathon (26.2M), and an epic 50K, plus a free Kid's Run. Runners will immerse themselves in the heart of Henry Cowell Redwoods State Park, traversing moderately technical dirt trails, single-track paths, and occasional fire roads. The course winds through a breathtaking variety of ecosystems, from towering 300-foot, 1500-year-old coastal redwoods and lush stream canyons to open meadows, fragrant pine and oak forests, and high, dry chaparral-covered ridges. Typical race day conditions in mid-July feature comfortable lows around 51F and highs around 89F, with a 0% chance of precipitation.

What truly sets this race apart is the unique experience of multiple crossings of the San Lorenzo River, which can be waist-deep and offer a refreshing, albeit challenging, element to the course. Expect significant elevation changes throughout, with the Half Marathon alone boasting over 2,100 feet of gain, making it a demanding yet rewarding experience for all participants. The trails are meticulously marked with colored ribbons to guide you through this natural wonderland, though runners are advised to stay alert for blue ribbons indicating a wrong turn. Start and finish at Harvey West Park in Santa Cruz, where parking is readily available.

Fuel your journey at fully-stocked aid stations positioned every 5-7 miles, offering fresh fruit, salty snacks, assorted candy, water, and electrolyte sports drinks. As part of the race's commitment to sustainability, this is a cupless event, so bringing your own hydration system capable of holding at least 20 oz. of water between stations is highly recommended. Organized by the reputable Coastal Trail Runs, known for their excellent events in beautiful locations, the San Lorenzo River Trail Run promises not just a race, but a profound sensory immersion into nature's grandeur, leaving you with lasting memories and a deep connection to the majestic Santa Cruz landscape.