Half Marathon
    Trail

    2026 Lake Chabot Trail Challenge (Half Marathon & 5K)

    June 7, 2026
    Castro Valley, California
    Rolling Course
    Register Now Visit Website

    Decision scores

    Six 0–100 scores telling you, at a glance, who this race is for.

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    Best for

    Trail / hill challenge

    About the Race

    “Beginning July 1, 2024, the “Honest Pricing Law” or “Hidden Fees Statute,” SB 478, makes it illegal for businesses to advertise or list a price for a good or service that does not include all required fees or charges other than certain government taxes and shipping costs.” RACE INFO: We are so excited to celebrate the 42nd annual Lake Chabot Trail Challenge Half Marathon and 5K. This race is well regarded amongst serious trail runners in the outlying areas. The race begins at 8am for the Hal...

    Course Profile

    Course profile data unavailable for this race.

    Course features

    Terrain
    trail
    Surface
    Trail
    Elevation gain
    Not measured
    Course type
    Not stated
    Field size
    Unknown
    Boston qualifier
    No
    Course map
    Not yet published
    Elevation profile
    Not measured

    Accessibility & inclusion

    Walker-friendly
    No
    Stroller-friendly
    No
    Dog-friendly
    No
    Kids race
    No

    Vibe & community

    scenic
    No charity partner listed.

    History & past results

    Years running
    Unknown — claim to add
    Recurrence
    Annual (assumed)

    Past finisher times and year-over-year participation will appear here once the organizer publishes them.

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    Common questions

    How hard is the 2026 Lake Chabot Trail Challenge (Half Marathon & 5K) Half Marathon?

    We don't have a verified elevation profile yet — check the organizer's course map for the climb breakdown.

    What should I wear?

    Dress for ~10°F warmer than the standing temperature once you start running. Throwaway long-sleeve at the start, gloves and a hat for sub-50°F mornings, singlet plus visor when it climbs above 60°F. The race-day forecast above is the source of truth closer to the date.

    When does it sell out?

    No published deadline. Most races raise the entry fee in tiers and can sell out without warning — sign up early if you're committed.

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