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Best Ontario, California Half Marathon Races

View some of the best Half Marathon races in Ontario, 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

    TBA, MN

    6.59 miles away

    I'm Attending

    2020 Summer Camp - Day 2

    World's Best Marathon & Half Series! No Time Limits Great Food Best Medals Loony Community!   We RUN this country, TOGETHER!Event details and schedulePlease check our website for details.

    • 1/2M

    TBA, MN

    6.59 miles away

    I'm Attending

    2020 Summer Camp - Day 3

    World's Best Marathon & Half Series! No Time Limits Great Food Best Medals Loony Community!   We RUN this country, TOGETHER!Event details and schedulePlease check our website for details.

    • 1/2M

    TBA, MN

    6.59 miles away

    I'm Attending

    2020 Summer Camp - Day 4

    World's Best Marathon & Half Series! No Time Limits Great Food Best Medals Loony Community!   We RUN this country, TOGETHER!Event details and schedulePlease check our website for details.

    • 1/2M

    TBA, MN

    6.59 miles away

    I'm Attending

    2020 Summer Camp - Day 5

    World's Best Marathon & Half Series! No Time Limits Great Food Best Medals Loony Community!   We RUN this country, TOGETHER!Event details and schedulePlease check our website for details.

    • 1/2M

    TBA, MN

    6.59 miles away

    I'm Attending

    2020 Summer Camp - Day 6

    World's Best Marathon & Half Series! No Time Limits Great Food Best Medals Loony Community!   We RUN this country, TOGETHER!Event details and schedulePlease check our website for details.

    • 1/2M

    Agua Dulce, CA

    48.23 miles away

    I'm Attending

    2020 SPACEROCK Trail Race

    SPACEROCK: the final trail running frontier.These are the voyages of trail runners around the world.Your mission: to explore strange new trails, to seek out new life and new experiences, to boldly run where no one has run before. Experien...

    • 1/2M

    Tustin, CA

    24.7 miles away

    I'm Attending

    Dinosaur Dash Nov. 1, 2020

    Dino Dash, November 1, 2020 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-tim...

    • 1/2M

    Long Beach, CA

    29.12 miles away

    I'm Attending

    2020 Holiday Half Marathon & 5K/10K

    The 2020 Virtual Holiday Running Festival will take place on December 12, 2020.  Since we will not be able to host a live event this year we are making the event virtual.  Don't worry will still be bringing you the holiday spirit to your house.  E...

    • 1/2M

    Huntington Beach, CA

    33.91 miles away

    I'm Attending

    Run In The New Year 5k/10K/Half Marathon

    2019 Photos: https://captivatingsportsphotos.shootproof.com/gallery/19ny5k/ Write a New Year resolution on the back of your bib and RUN, JOG, or WALK it into the new year. Get in gear for your NEW YEAR.     IT's a beachy, party, New Year's Theme...

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