Mt. Umunhum Trail Marathon
Race Day Weather
Cool start, warming finish
Runners will face a cool start at 46°F, with temperatures warming to 61°F by the finish. Wind will be light at 6 mph, and humidity is moderate at 64%, which may require hydration planning. As the race progresses, runners should adjust their pace for the warmer conditions in the later laps, especially as they descend back to the start area.
This course climbs 2,881 ft to its high point and back, so we look at it at 2 points, not just the start line. In a typical year, at 9:00/mi, you start at 46° and finish around 11:56 AM in 58°.
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Race Info
The Mt. Umunhum Trail Conquest Winter marathon starts at the Hacienda entrance to Almaden Quicksilver County Park in San Jose, California, and climbs into the Sierra Azul Open Space Preserve to the summit of Mt. Umunhum. Troy's California Trail Runs holds the race each February, with a companion Fall edition on the same course network held in October. The event also offers 50K, 30K, half marathon, 7-mile, 5K, and 1-mile distances on the same day, with the 30K route instead summiting Bald Mountain.
