50KMarathon25KHalf Marathon15K10K5K

Calero Trail Run - Winter

San Jose, California
Days to go
60

At a glance

Date
Dec 5, 2026
Location
San Jose, California
Distances
50K, Marathon, 25K, Half Marathon, 15K, 10K, 5K
Registration
See ultrasignup.com
Official site
tctruns.com
Listed from
UltraSignup
Last checked
Oct 4, 2026

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Key dates

Race day

Dec 5, 2026

60d

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Tune-up races

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    Half Marathon, 5 weeks before race day, 13 mi away, registration open

  • Acorn Creek Trail Run

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    Half Marathon, 6 weeks before race day, 118 mi away, registration open

Straight-line distance

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Straight-line distance

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Race planning

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