View some of the best Half Marathon races in Simi Valley, 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.
Celebrate Father's Day by kicking off the weekend with an awesome race taking you on a scenic tour through the beautiful Santa Clarita Valley. A community race created to bring runners together and give you a great race experience and earn an awes...
Southern California features a diverse range of nature and terrain, giving runners a wide variety of spectacular trails and running experiences. Located north of Los Angeles up against the California State park boundaries is Valencia, a suburban c...
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