Embark on an unforgettable trail running adventure at the Marin Ultra Challenge, set for March 14, 2026, in the breathtaking landscapes surrounding Sausalito, California. This premier event, celebrating its 13th edition, offers two formidable distances: a 50-mile race boasting approximately 10,550 to 11,000 feet of elevation gain, and a 50K challenge with around 6,000 to 6,500 feet of climbing. The journey begins on the distinctive black sands of Rodeo Beach, guiding runners through a diverse tapestry of terrain across the iconic Marin Headlands, Mt. Tamalpais, and Muir Woods. Expect a captivating mix of exposed fire-roads offering sweeping coastal vistas and glimpses of the Golden Gate Bridge, alongside technical single-track trails winding beneath ancient redwood canopies.

The meticulously designed courses, known for their minimal trail overlap, promise ample hills and exhilarating descents, including the infamous Willow Camp climb, which gains 1,800 feet in just 1.8 miles—a true test of grit after significant downhill sections. Runners will traverse notable sections such as the historic Dipsea Trail, conquer Cardiac Hill, and experience the serene beauty of Muir Beach and Stinson Beach. Aid stations along the route are generously stocked with a variety of glycogen-replenishing and electrolyte-replacing products, including everything from traditional ultra fare to popular snacks, ensuring runners are well-supported through this physically demanding and exceptionally beautiful race. Typical race day conditions in mid-March feature comfortable highs around 62°F and lows around 49°F, with a modest 14% chance of precipitation.

The Marin Ultra Challenge stands out as one of the toughest and most scenic races in the Bay Area, renowned for its challenging elevation and stunning natural beauty. With live runner tracking at every aid station and a vibrant post-race celebration at Rodeo Beach, participants will find an atmosphere of encouragement and camaraderie. Cash prizes are even awarded to top male and female finishers in the 50 Miler, adding an extra layer of competition. Runners are advised to carry their own cup or bottle as it is a cupless event, and trekking poles are permitted to aid in tackling the long, challenging ascents and descents.