Crystal Springs Winter Trail Run Half Marathon
Race Day Weather
Cool start — fast day potential, warming through the race
A cool 45°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 58°F through the course will gradually increase perceived effort in the second half. Moderate humidity at 66% is worth noting for effort level, especially in later miles.
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Race Info
The Half Marathon runs the pink course through Huddart Park in the Woodside hills, beneath redwoods and ferns. It climbs about 2,200 feet, so it is a hilly half. The race starts and finishes at the Werder Shelter in Huddart Park on a Sunday in January.