42cal logo
42cal
All Collections
Race Collection

Half Marathons in California 2026–2027

There are 19 upcoming half marathons in California on the 42Cal calendar, from October 2026 through August 2027.

19
Upcoming races
October 2026 – August 2027
Date range
1
Countries
330 ft
Median elevation

Race data last updated .

Upcoming Half Marathons in California 2026–2027

  1. Oct 25, 2026
    Registration Open

    Santa Cruz Marathon

    Santa Cruz, California, United States
    Marathon

    Also: Half Marathon, 5K

    See full guide
  2. Nov 1, 2026
    Registration Open

    Two Cities Marathon

    Fresno, CA, United States
    Marathon

    Also: Half Marathon, 10K, 5K

    See full guide
  3. Nov 7, 2026
    Registration Open

    REVEL Big Bear Marathon

    Redlands, CA, United States
    Marathon

    Also: Half Marathon

    See full guide
  4. Nov 8, 2026
    Sold Out

    Monterey Bay Half Marathon

    Monterey, CA, United States
    Half Marathon

    Also: 5K

    See full guide
  5. Nov 15, 2026
    Registration Open

    Berkeley Half Marathon

    Berkeley, CA, United States
    Half Marathon

    Also: 10K, 5K

    See full guide
  6. Jan 17, 2027
    Registration Open

    Carlsbad Marathon, Half Marathon & 5K

    Carlsbad, CA, United States
    Marathon

    Also: 5K, Half Marathon

    See full guide
  7. Mar 7, 2027
    Registration Open

    ASICS Los Angeles Marathon

    Los Angeles, CA, United States
    Marathon

    Also: Half Marathon, 5K

    See full guide
  8. Mar 7, 2027
    Registration Open

    Napa Valley Marathon and Half Marathon

    Napa, CA, United States
    Marathon

    Also: Half Marathon, 5K

    See full guide
  9. Mar 21, 2027
    Registration Open

    Oakland Marathon

    Oakland, California, United States
    Marathon

    Also: Half Marathon, 10K, 5K

    See full guide
  10. Apr 4, 2027
    Registration Open

    Modesto Marathon

    Modesto, CA, United States
    Marathon

    Also: Half Marathon, 10K, 5K

    See full guide
  11. Apr 17, 2027
    Registration Open

    California Classic Half Marathon

    Fresno, CA, United States
    Half Marathon

    Also: 10K, 5K

    See full guide
  12. Apr 18, 2027
    Registration Open

    Mountains 2 Beach Marathon

    Ojai to Ventura, CA, United States
    Marathon

    Also: Half Marathon, 10K, 5K

    See full guide
  13. Apr 24, 2027
    Opening Soon

    American River Parkway Half Marathon

    Carmichael, CA, United States
    Half Marathon

    Also: 5K

    See full guide
  14. May 2, 2027
    Registration Open

    OC Marathon

    Newport Beach to Costa Mesa, California, United States
    Marathon

    Also: Half Marathon, 5K

    See full guide
  15. Jun 6, 2027
    Opening Soon

    Rock 'n' Roll San Diego

    San Diego, CA, United States
    Marathon

    Also: Half Marathon, 5K

    See full guide
  16. Jul 17, 2027
    Opening Soon

    Brian Waterbury Memorial Rock to Pier Run and Half Marathon

    Morro Bay, CA, United States
    Half Marathon

    Also: 10K

    See full guide
  17. Jul 18, 2027
    Registration Open

    Napa to Sonoma Wine Country Half Marathon

    Napa, CA, United States
    Half Marathon

    Also: 5K

    See full guide
  18. Jul 25, 2027
    Registration Open

    San Francisco Marathon

    San Francisco, CA, United States
    Marathon

    Also: Half Marathon, 10K, 5K

    See full guide
  19. Aug 22, 2027
    Registration Open

    Santa Rosa Marathon

    Santa Rosa, CA, United States
    Marathon

    Also: Half Marathon, 10K, 5K

    See full guide

Recently Run

  1. Oct 18, 2026
    Completed

    Lake Tahoe Marathon

    Homewood to South Lake Tahoe, California, United States
    Marathon

    Also: Marathon, Half Marathon, 10K, 5K

    See full guide
  2. Oct 11, 2026
    Completed

    Long Beach Marathon

    Long Beach, CA, United States
    Marathon

    Also: Half Marathon, 5K

    See full guide
  3. Apr 12, 2026
    Completed

    Visalia Half Marathon

    Visalia, CA, United States
    Half Marathon

    Also: 10K

    See full guide

Compare These Races

RaceDateLocationDistanceElevationStatus
Santa Cruz MarathonOctober 2026Santa Cruz, United StatesMarathon600 ftRegistration Open
Two Cities MarathonNovember 2026Fresno, United StatesMarathon317 ftRegistration Open
REVEL Big Bear MarathonNovember 2026Redlands, United StatesMarathon150 ftRegistration Open
Monterey Bay Half MarathonNovember 2026Monterey, United StatesHalf Marathon106 ftSold Out
Berkeley Half MarathonNovember 2026Berkeley, United StatesHalf Marathon512 ftRegistration Open
Carlsbad Marathon, Half Marathon & 5KJanuary 2027Carlsbad, United StatesMarathon240 mRegistration Open
ASICS Los Angeles MarathonMarch 2027Los Angeles, United StatesMarathon280 mRegistration Open
Napa Valley Marathon and Half MarathonMarch 2027Napa, United StatesMarathon104 mRegistration Open
Oakland MarathonMarch 2027Oakland, United StatesMarathon233 mRegistration Open
Modesto MarathonApril 2027Modesto, United StatesMarathon75 ftRegistration Open
California Classic Half MarathonApril 2027Fresno, United StatesHalf Marathon60 mRegistration Open
Mountains 2 Beach MarathonApril 2027Ojai to Ventura, United StatesMarathon90 mRegistration Open
American River Parkway Half MarathonApril 2027Carmichael, United StatesHalf Marathon30 mOpening Soon
OC MarathonMay 2027Newport Beach to Costa Mesa, United StatesMarathon330 ftRegistration Open
Rock 'n' Roll San DiegoJune 2027San Diego, United StatesMarathon250 mOpening Soon
Brian Waterbury Memorial Rock to Pier Run and Half MarathonJuly 2027Morro Bay, United StatesHalf Marathon40 mOpening Soon
Napa to Sonoma Wine Country Half MarathonJuly 2027Napa, United StatesHalf Marathon485 ftRegistration Open
San Francisco MarathonJuly 2027San Francisco, United StatesMarathon350 mRegistration Open
Santa Rosa MarathonAugust 2027Santa Rosa, United StatesMarathon416 ftRegistration Open
Lake Tahoe MarathonOctober 2026Homewood to South Lake Tahoe, United StatesMarathon1,785 ftcompleted
Long Beach MarathonOctober 2026Long Beach, United StatesMarathon40 mcompleted
Visalia Half MarathonApril 2026Visalia, United StatesHalf Marathon30 mcompleted

Related Collections

Marathons in CaliforniaRaces in CaliforniaHalf Marathons in AlabamaHalf Marathons in ArkansasHalf Marathons in ColoradoHalf Marathons in Florida

Frequently Asked Questions

Plan Your Race

Pace Calculator

Plan your splits and finish time

Race Predictor

Predict your time from a recent result

BQ Calculator

Check your Boston qualifying time

Fuel Planner

Plan your race-day nutrition

Difficulty Analyzer

Score the course difficulty

Training Paces

Get your VDOT training zones

Browse Every Collection

Explore curated race lists by region, feature, season, and country.

View All Collections