Marin Ultra Challenge

Marin Ultra Challenge

Sausalito, CAMarch 14, 2026

50M50K
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Our premier Marin County long distance trail race, the MUC delivers ample hills and sweeping descents. This year marks the 11th edition of this tour of some of MarinÔøΩÔøΩÔøΩs best trails. Meticulous effort went into the design of each course for the MUC; both distances are physically demanding (the 50 Mile has just about 11,000 feet of elevation gain) and exceptionally beautiful. The journey begins at the black sand of Rodeo Beach, then traverses the Marin Headlands, Stinson-facing Mt. Tamalpais and Muir Woods, exhibiting a range of terrain, from exposed fire-roads with incredible coastal and inland views to tight, technical single-track with redwood canopies. There is very little trail overlap, and Jim Vernon, from The Endurables and Hydrapak, spent hours and weekends developing these spectacular custom coursesÔøΩÔøΩÔøΩwe are super excited to show it off. YouÔøΩÔøΩÔøΩll quickly realize why Marin County has become the ultimate trail runnerÔøΩÔøΩÔøΩs destination. NOTE: Due to entry limitations by the GGNRA we will only be able to host a 50K and 50 Mile at the 2024 MUC.

Please visit the official race website to confirm all details.