Embark on an unforgettable trail running adventure at The Big Alta, a premier event in trail-famous Marin County, California, presented by Daybreak Racing and Freetrail. Scheduled for March 20, 2026, from the scenic Marinwood Community Center & Park in San Rafael, this race weekend offers a challenge for every ambition with distances of 100K, 50K, and 28K. The courses are a feast for the eyes, treating runners to extensive vistas that stretch across the entire San Francisco Bay Area, all while summiting some of Marin County's highest points, including Loma Alta and Big Rock Ridge. Expect a rugged mix of dirt double-track fire roads and exhilarating single-track trails, featuring long ascents and steep descents through ridgelines, ravines, hilly open grasslands, wildflower meadows, and oak woodlands. The new point-to-point 100K route offers an epic traverse of the Marin County region, encompassing iconic landmarks like the Golden Gate Bridge, Marin Headlands, and Mt. Tamalpais.

Runners consistently praise The Big Alta for its stunning scenery and challenging yet runnable terrain, making it a true test of fitness and mental fortitude. Aid stations are strategically placed along the courses—three for the 50K, nine for the 100K, and one for the 28K—and are famously well-stocked with Neversecond gels and hydration, water, soda, bananas, oranges, chips, and PB&J sandwiches. Later aid stations on the 100K will also offer warm, savory options, all served by experienced volunteers and medical personnel in a cupless environment. Typical race day conditions in late March bring pleasant highs around 65°F and lows around 45°F, with a roughly 21% chance of precipitation, creating ideal cool-weather running.

The Big Alta promises more than just a race; it's an experience brimming with "electric race weekend vibes," community support, and custom finisher awards. Whether you're tackling the 3,900 feet of elevation in the 28K, the 6,700 feet in the 50K, or the formidable 12,750 feet of gain in the 100K, this event is renowned for its professional organization and the unparalleled beauty that provides ample distraction and opportunity for reflection amidst the challenge. Secure your spot for a truly unforgettable journey through Marin's magnificent trails.