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Calero Trail Run - Winter
TrailUnited StatesCalifornia

Calero Trail Run - Winter 2026

05.12.2026San Jose (United States)
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8 courses · 5–50 km3.1–31.1 mi · up to 831 m D+up to 2’726 ft D+

At a glance

Calero Trail Run - Winter 2026 takes place on Saturday 5 December 2026 in San Jose (California, United States). 8 courses from 5 to 50 km.

Longest course: 25 km with 831 m D+ (33 m per km: hilly terrain).

On Kliva, plan your pacing and nutrition for free, then send the plan to your watch.

Beginning at Calero County Park, this trail run has everything! Experience awesome single track, great hills, and dirt paths. The 50K is a challenging, fantastic trainer for Western States that…
From the organiser

8 courses

  1. 5km3.1mi

    77 m D+253 ft D+

    avg 2%

    5K
    No index

  2. 10km6.2mi

    362 m D+1’188 ft D+

    avg 4%

    10K
    No index

  3. 15km9.3mi

    533 m D+1’749 ft D+

    avg 4%

    15K
    No index

  4. 21.1km13.1mi

    755 m D+2’477 ft D+

    avg 4%

    Half Marathon
    No index

  5. 25km15.5mi

    831 m D+2’726 ft D+

    avg 3%

    25K
    No index

  6. 42.2km26.2mi

    Trail Marathon
    No index

  7. 50km31.1mi

    50K
    No index

  8. –

    Mile
    No index

GPX trace not yet published.

Race plan

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Start

San Jose (United States)

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