How many half marathons in California are there between 2026 and 2027?

There are 17 half marathons in California listed on 42Cal, from July 2026 through June 2027. The count updates automatically as races are added.

When is the best time for half marathons in California?

Most of the 17 races on this list (9 of them) fall in March and October and November.

Which race in this list has the least elevation gain?

Modesto Marathon in Modesto is the flattest race on this list, with about 75 ft of total elevation gain — based on the 17 of 17 races here with elevation data on file.

How current is this list?

This list was last refreshed on August 31, 2026. Race dates, locations, and course details are updated continuously as organizers confirm changes, so this page reflects the calendar as of that date.

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Race Collection

Half Marathons in California

There are 17 upcoming half marathons in California on the 42Cal calendar, from July 2026 through June 2027. Course elevation gain starts as low as 75 ft, with a median of 416 ft across the field.

Upcoming races

July 2026 – June 2027

Date range

Countries

416 ft

Median elevation

Race data last updated August 31, 2026.

The Races

17 races

Oct 11, 2026

Sold Out

Long Beach Marathon

Long Beach, CA, United States

Marathon

Also: Half Marathon, 5K

Race	Date	Location	Distance	Elevation	Status
Long Beach Marathon	October 2026	Long Beach, United States	Marathon	40 m	Sold Out
Lake Tahoe Marathon	October 2026	Homewood to South Lake Tahoe, United States	Marathon	1,785 ft	Registration Open
Santa Cruz Marathon	October 2026	Santa Cruz, United States	Marathon	600 ft	Registration Open
Two Cities Marathon	November 2026	Fresno, United States	Marathon	317 ft	Registration Open
REVEL Big Bear Marathon	November 2026	Redlands, United States	Marathon	150 ft	Registration Open
Monterey Bay Half Marathon	November 2026	Monterey, United States	Half Marathon	106 ft	Registration Closed
Carlsbad Marathon, Half Marathon & 5K	January 2027	Carlsbad, United States	Marathon	240 m	Registration Open
Ventura Marathon	February 2027	Ventura, United States	Marathon	332 ft	Registration Open
ASICS Los Angeles Marathon	March 2027	Los Angeles, United States	Marathon	280 m	Registration Open
Napa Valley Marathon and Half Marathon	March 2027	Napa, United States	Marathon	104 m	Opening Soon
Oakland Marathon	March 2027	Oakland, United States	Marathon	233 m	Registration Open
Modesto Marathon	April 2027	Modesto, United States	Marathon	75 ft	Registration Open
Mountains 2 Beach Marathon	April 2027	Ojai to Ventura, United States	Marathon	90 m	Registration Open
Rock 'n' Roll San Diego	June 2027	San Diego, United States	Marathon	250 m	Opening Soon
Santa Rosa Marathon	August 2026	Santa Rosa, United States	Marathon	416 ft	completed
Napa to Sonoma Wine Country Half Marathon	July 2026	Napa, United States	Half Marathon	485 ft	completed
San Francisco Marathon	July 2026	San Francisco, United States	Marathon	350 m	completed

Half Marathons in California

The Races

Long Beach Marathon

Lake Tahoe Marathon

Santa Cruz Marathon

Two Cities Marathon

REVEL Big Bear Marathon

Monterey Bay Half Marathon

Carlsbad Marathon, Half Marathon & 5K

Ventura Marathon

ASICS Los Angeles Marathon

Napa Valley Marathon and Half Marathon

Oakland Marathon

Modesto Marathon

Mountains 2 Beach Marathon

Rock 'n' Roll San Diego

Santa Rosa Marathon

Napa to Sonoma Wine Country Half Marathon

San Francisco Marathon

Compare These Races

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Frequently Asked Questions

How many half marathons in California are there between 2026 and 2027?

When is the best time for half marathons in California?

Which race in this list has the least elevation gain?

How current is this list?

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