Crystal Springs Winter Trail Run 35K

Woodside, CA, USA · January 17, 2027
partly-cloudy-day45°·56° high·Calm·Dry
10
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Race Day Weather

partly-cloudy-day
45°at start
58° high
Light
Dry
Your goal
0:00:00

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.

Race day forecast available in 86 days
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Pace Calculator

21.7mi
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Race Info

The 35K follows the pink and green trails out from Huddart Park toward King's Mountain and returns on the same route. It climbs roughly 3,000 feet beneath redwoods. Runners start and finish at the Werder Shelter in Huddart Park, Woodside, on a Sunday in January.

Race weekend

Sunday, January 17
8:00 AM50K (31.1 mi)
8:00 AMMarathon (26.2 mi)
8:00 AM35K (21.7 mi)
8:30 AMHalf Marathon (13.1 mi)
8:45 AM8K (5.0 mi)
Area Map

Course Map

FAQ

When is the 2027 Crystal Springs Winter Trail Run 35K?

The 2027 Crystal Springs Winter Trail Run 35K will be held on Sunday January 17, 2027.

What is the time limit for the Crystal Springs Winter Trail Run 35K?

The time limit for the Crystal Springs Winter Trail Run 35K is 8.5 hours.

What will the weather be like for the 2027 Crystal Springs Winter Trail Run 35K?

The forecast calls for a high of 59°F and a low of 43°F with a 11% chance of rain.

Historical Weather

Based on 4 years of data
Avg Temp
55°F
L:50° H:59°
RunScore
9
Conditions
Rain Freq
25%
1 of 4 yrs
Wind4mph
Dew44°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
47°/61°-
8
2025
clear-day
51°/62°-
10
2024
partly-cloudy-day
51°/57°-
8
2023
rain
52°/54°Light
9