running.services
    Half Marathon · San Antonio

    Half Marathons in San Antonio, TX in May

    Every half marathon happening in or near San Antonio during May. Sorted by date with deterministic 0–100 scores so you can pick the right one for your goal.

    We don't have enough data here yet, so this page isn't indexed by search engines.

    Open in race search for full filters →
    Half Marathon

    Run This Mother Half Marathon, 10k, 5K

    Sun, May 10, 2026
    San Antonio, Texas
    road
    Rolling
    60PR40value45vibe
    Register
    Half Marathon

    American Hero 25K Relay & Half Marathon

    Sun, May 24, 2026
    San Antonio, Texas
    road
    Rolling
    60PR40value45vibe
    Register

    Get an alert when a new race is added

    Save this search and we'll email you when a matching race opens registration or drops in price.

    Save this search

    Explore more

    5Ks in San Antonio10Ks in San AntonioMarathons in San AntonioTrail Races in San AntonioAll races in TexasHalf Marathons in San Antonio (all months)