Which California cities have the most Half Marathon races?
Long Beach (53), Los Angeles (35), San Diego (33), Sacramento (30) lead the state for Half Marathon races. Those give you the most dates to choose from if your schedule is tight.
California · Half Marathon
Half Marathon Races in California
Every upcoming Half Marathon in California, all 276 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
276 upcoming Half Marathon races · 77 with finish-time stats
By the numbers
The Biggest and Longest-Running
The California races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Half Marathon Races by City
Soonest Half Marathon Races in California
276 total Sun, Jul 26, 2026Half-Marathon Training for Fun & Fitness Grass Valley, CAFrom $40Details Sat, Aug 1, 2026Summer Breeze San Leandro, CAFrom $73Details Sat, Aug 1, 2026Green Valley Lake 5k/10k/& Half Marathon Green Valley Lake, CAFrom $41Details Sat, Aug 1, 2026Rodeo Valley Trail Run Sausilto, CAPricing TBADetails Sat, Aug 1, 2026Dog Days of Summer - 5K, 10K, 10M, and Half Marathon Long Beach, CAFrom $15Details Sat, Aug 1, 2026Tiki Time Run: Paradise Run 5K, 10K, & Half Marathon Long Beach, CAFrom $46Details Sat, Aug 8, 2026Hell Of A Half Marathon & 2 Person Relay Exeter, CAFrom $85Details Sat, Aug 8, 2026Noyo Headlands Race Fort Bragg, CAFrom $50Details Sun, Aug 9, 2026Howl at the Moon - 5K, 10K, 10M, and Half Marathon Long Beach, CAFrom $45Details Sun, Aug 9, 2026Sundae Funday - Ice Cream Run 5K, 10K, and Half Marathon Long Beach, CAFrom $46Details Sun, Aug 9, 2026Strides in Recovery Community Event Long Beach, CAFreeRegister Sat, Aug 15, 2026Redwood (Summer) Trail Run Oakland, CAFrom $60Details
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.
Common Questions About Running a Half Marathon in California
When are most Half Marathon races held in California?
October is the busiest month for Half Marathon races in California, with 39 of the 276, followed by November with 37. If you are flexible on the date, that is the quickest way to narrow things down.
How much do California Half Marathon races cost?
Entry fees for Half Marathon races here run from free to about $130, depending on the event and how early you register.
How early should I register for a Half Marathon in California?
108 of the 276 Half Marathon races in California already have a price increase scheduled, so entry gets more expensive the longer you leave it. Race pricing almost always steps up as the date approaches, and signing up early is usually the cheapest option.
Are California Half Marathon races beginner-friendly?
Yes, for the most part. Across the 74 Half Marathon races in California with published results, the typical median finish is around 2:17:38, which means half of every one of those fields came in slower than that. Recreational runners and walk-runners are the bulk of these fields, not the exception.
Are there trail Half Marathon races in California?
Yes, 30 races around California get you off the pavement: 21 are trail races, and 9 mix road and trail. Surfaces are not always published, so it is worth checking a specific race before you register.