When in April are most half marathons held?
The busiest weekend in California is April 10 and April 11, with 12 of them, 11 of those on Saturday, April 10. Every one of them is on a Saturday or a Sunday.
Race calendar · April 2027 · California
Half Marathons in California in April 2027
Every Half Marathon in California in April 2027, all 36 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
April Half Marathons, By the Numbers
2:30:33Median finish time
1:36:57Median winning time
95Median field size
10April half marathons with published results
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 Nov 12, 2026.
When in April
The April Race Weekends
Half marathons are not spread evenly across April. Here is how the calendar actually falls, weekend by weekend, which is the part worth knowing before you book a trip or plan a taper around one.
By the numbers
The Biggest Field
The largest field of any April Half Marathon in California, from the most recent published results.
California Half Marathons by City in April
All Half Marathons in California in April
36 total Sat, Apr 3, 2027Bedrock Valley Trail Runs Hemet, CAFrom $80Details Sat, Apr 3, 2027RunThrough USA Long Beach 5k,10k & Half Marathon Race Long Beach, CAFrom $72Details Sat, Apr 3, 2027The Cobra 5Kai, 10Kai & Half Miyagithon Canoga Park, CAFrom $35Details Sun, Apr 4, 2027Bakersfield Marathon Bakersfield, CAFrom $100Details Sun, Apr 4, 2027Modesto Marathon Modesto, CAFrom $85Details Sat, Apr 10, 2027Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M Agoura Hills, CAFrom $117Details Sat, Apr 10, 2027San Diego Beach & Bay Half Marathon San Diego, CAFrom $135Details Sat, Apr 10, 2027Sloth Run 5K/10K/13.1 LOS ANGELES Los Angeles, CAFrom $45Register Sat, Apr 10, 2027Sloth Run 5K/10K/13.1 SACRAMENTO Sacramento, CAFrom $45Register Sat, Apr 10, 2027Sloth Run 5K/10K/13.1 SAN DIEGO San Diego, CAFrom $45Register Sat, Apr 10, 2027Sloth Run 5K/10K/13.1 SAN FRANCISCO San Francisco, CAFrom $45Register Sat, Apr 10, 2027Run for PB&J 5k/10k/13.1 LOS ANGELES Los Angeles, CAFrom $45Register Sat, Apr 10, 2027Run for PB&J 5k/10k/13.1 SACRAMENTO San Francisco, CAFrom $45Register Sat, Apr 10, 2027Run for PB&J 5k/10k/13.1 SAN DIEGO San Diego, CAFrom $45Register Sat, Apr 10, 2027Run for PB&J 5k/10k/13.1 SAN FRANCISCO San Francisco, CAFrom $45Register Sat, Apr 10, 2027Hip~Hop Half: Long Beach Long Beach, CAFrom $60Details Sun, Apr 11, 2027Beer City San Francisco San Francisco, CARegistration opens Dec 1From $100Details Sat, Apr 17, 2027California Classic Half Marathon Fresno, CAFrom $85Details Sat, Apr 17, 2027Badger Cove Livermore, CARegistration opens Jan 1, 2027From $50Details Sat, Apr 17, 2027SPASM Lake Chabot Trail Run Castro Valley, CAFrom $70Details Sat, Apr 17, 2027Run for the Planet - 5K, 10K, 10M, and Half Marathon Long Beach, CAFrom $39Details Sat, Apr 17, 2027Run for the Planet - 5K, 10K, Half Marathon Long beach, CAFrom $49Details Sun, Apr 18, 2027Mountains 2 Beach Marathon and Half Ventura, CAFrom $135Details Sun, Apr 18, 2027Alameda Island Running Festival Alameda, CAFrom $100Details Sun, Apr 18, 2027Dolphin Dash - 5K, 10K, and Half Marathon Santa Monica, CAFrom $39Details Sat, Apr 24, 2027Horseshoe Lake Trail Run Los Gatos, CAFrom $70Details Sat, Apr 24, 2027Nail the Rail Half Marathon, 10K & 5K Shasta Lake, CAFrom $69Details Sat, Apr 24, 2027Coffee Lovers Run LOS ANGELES Los Angeles, CAFrom $45Register Sat, Apr 24, 2027Run for Donuts LOS ANGELES Los Angeles, CAFrom $45Register Sat, Apr 24, 2027American River Parkway Half Marathon Carmichael, CAFrom $85Details Sat, Apr 24, 2027Coffee Lovers Run SACRAMENTO Sacramento, CAFrom $45Register Sat, Apr 24, 2027Coffee Lovers Run SAN DIEGO San Diego, CAFrom $45Register Sat, Apr 24, 2027Coffee Lovers Run SAN FRANCISCO San Francisco, CAFrom $45Register Sat, Apr 24, 2027Run for Donuts SACRAMENTO Sacramento, CAFrom $45Register Sat, Apr 24, 2027Run for Donuts SAN DIEGO San Diego, CAFrom $45Register Sat, Apr 24, 2027Run for Donuts SAN FRANCISCO San Francisco, CAFrom $45Register
Common Questions About Running an April Half Marathon in California
What is a good Half Marathon time?
Across the 10 of these April half marathons with published results from past editions, the median finisher ran 2:30:33, and the median winning time was 1:36:57. So anything under 2:30:33 puts you in the faster half of a typical field. That is the middle of these RunSignup fields, walkers and charity entrants included, not a national average.
How big is a typical April Half Marathon field?
The median one finished 95 runners, across the 10 of these April half marathons with published results from past editions. Most are far smaller than the big-city events people picture, which means less crowding at the start and a friendlier field, with a last recorded finisher at 4:19:03.
Are there trail half marathons in California in April?
Yes, 3 races around California get you off the pavement: 3 are trail races.