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Best Fullerton, California Half Marathon Races

View some of the best Half Marathon races in Fullerton, California! RaceMob's race calendar allows you to find races that suits your needs. Use our advanced filters below or calendar on the right, and discover new races. We try to maintain up to date information, and rely heavily on our community of volunteers. If you find a race that we're missing, use the "Suggest Race" button on the right. Find RaceMob discounts that others have added or add deals that you've discovered.

    • 1/2M

    long beach, CA

    16.82 miles away

    I'm Attending

    Fun in the Sun 5k, 10k, 15k, Half Marathon

    It's time for the Fun in the Sun 5k, 10k, 15k, Half Marathon run/walk!!  Event details and scheduleSunday Aug 15, 2021​ Bib pick up - 7:10-7:30AM Start - 7:30AM    Everyone will get a time and place on our results page at: www.abetterworldrunning....

    • 1/2M

    Riverside, CA

    25.18 miles away

    I'm Attending

    Run for The Ridge

    / 1 RaceMobber Scheduled

    Peppermint Ridge, local businesses and the community come together in spirit to get exercise and support the men and women who live at Peppermint Ridge.  Participant medals are awarded to every finisher in all races. Half Marathon, 10K and 5K part...

    • 1/2M

    Agua Dulce, CA

    48.35 miles away

    I'm Attending

    2021 SPACEROCK Trail Race

    UPDATE: Due to the Covid-19 pandemic the 2020 race date has been postponed. Read update here.   SPACEROCK: the final trail running frontier.These are the voyages of trail runners around the world.Your mission: to e...

    • 1/2M

    Irvine, CA

    15.75 miles away

    I'm Attending

    FIT FALL Halloween Harvest 5k/10K

    The SOMETHING FOR EVERY BODY & EVERYBODY races! This year’s event will again support our armed forces and anything in a uniform. THIS YEAR'S EVENT will be a TOGETHER-APART RACE...meaning we will have staggered start times (Family groups, runni...

    • 1/2M

    Tustin, CA

    12.56 miles away

    I'm Attending

    DINO DASH

    It's an Orange County tradition! Now in its 30th year, the Dinosaur Dash is a community run, walk, and bike event benefiting the Tustin Public Schools Foundation. There's something for everyone--a 2k fun run, chip-timed 5k and 10k runs, and Bike ...

    • 1/2M

    Riverside, CA

    28.37 miles away

    I'm Attending

    Citrus Heritage Run

    The Citrus Heritage Run is a Half Marathon, 10k, 5K, and 1-mile kids race on Saturday, January 8, 2022. This unique and “sweet-smelling” course winds through the historic orange groves of The California Citrus Historic State Park in Riverside, CA....

    • 1/2M

    Huntington Beach, CA

    15.73 miles away

    I'm Attending

    SOCAL River Marathon - 26.2 - 13.1 - 10K - 5K

    The SOCAL River Marathon has four distances. Full Marathon, Half Marathon, 10K and 5K.  This is a fun course in Southern California. This course runs on the Santa Ana River Trail from Yorba Linda to Huntington Beach State Park. This route truly s...

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