RACE Logo
Sign In

Half Marathons in California

California has 104 upcoming half marathons scheduled for 2026. That is the highest event count for half marathons of any state. The calendar runs year-round — busiest in August, October, and December, quietest in February, April, and June. Long Beach is the busiest city with 59 races, ahead of San Diego (5) and Huntington Beach (4).

Half marathons by month in California

Aug (16) · Dec (16) · Oct (15) · Nov (15) · Jul (9) · Sep (9) · Jan (6) · Mar (5) · Apr (4) · May (4) · Feb (3) · Jun (2)

Showing 24 of 104

LOOK GOOD FEEL GOOD SAN LEANDRO 5K, 10, HALF MARATHON & MARATHON
Running

LOOK GOOD FEEL GOOD SAN LEANDRO 5K, 10, HALF MARATHON & MARATHON

July 13, 2026
San Leandro, CA
Details →
Hot to Trot 5k, 10k, 15k, Half Marathon
Running

Hot to Trot 5k, 10k, 15k, Half Marathon

July 18, 2026
Los Angeles, CA
Details →
Rockin' Summer 5k, 10k, 15k, Half Marathon
Running

Rockin' Summer 5k, 10k, 15k, Half Marathon

July 19, 2026
South El Monte, CA
Details →

Running

Half-Marathon Training for Fun & Fitness

Grass Valley, CA

Running

Half-Marathon Training for Fun & Fitness

July 19, 2026
Grass Valley, CA
Details →

Running

LBC - Good Vibes Run 5K, 10K, & Half Marathon by Califlow Runs

Long Beach, CA

Running

LBC - Good Vibes Run 5K, 10K, & Half Marathon by Califlow Runs

July 25, 2026
Long Beach, CA
Details →
LBC - Good Vibes Run 5K, 10K, & Half Marathon by Califlow Runs
Running

LBC - Good Vibes Run 5K, 10K, & Half Marathon by Califlow Runs

July 25, 2026
Long Beach, CA
Details →
Half-Marathon Training for Fun & Fitness
Running

Half-Marathon Training for Fun & Fitness

July 26, 2026
Grass Valley, CA
Details →
Summer Fun 5k, 10k, 15k, Half Marathon
Running

Summer Fun 5k, 10k, 15k, Half Marathon

July 26, 2026
Long Beach, CA
Details →
BOO-gie Glow Run 5K 10K Half Marathon - SummerWeen Series by Califlow Runs
Running

BOO-gie Glow Run 5K 10K Half Marathon - SummerWeen Series by Califlow Runs

July 26, 2026
Long Beach, CA
Details →
Tiki Time Run: Paradise Run 5K, 10K, & Half Marathon by Califlow Runs
Running

Tiki Time Run: Paradise Run 5K, 10K, & Half Marathon by Califlow Runs

August 1, 2026
Long Beach, CA
Details →
Dog Days of Summer – 5K, 10K, 10M, and Half Marathon
Running

Dog Days of Summer – 5K, 10K, 10M, and Half Marathon

August 1, 2026
Long Beach, CA
Details →
Green Valley Lake 5k/10k/& Half Marathon
Running

Green Valley Lake 5k/10k/& Half Marathon

August 1, 2026
Green Valley Lake, CA
Details →
Lucky Eight 5k, 10k, 15k, Half Marathon
Running

Lucky Eight 5k, 10k, 15k, Half Marathon

August 8, 2026
Long Beach, CA
Details →
Hell Of A Half Marathon & 2 Person Relay
Running

Hell Of A Half Marathon & 2 Person Relay

August 8, 2026
Exeter, CA
Details →
Sundae Funday - Ice Cream Run 5K, 10K, and Half Marathon by Califlow Runs
Running

Sundae Funday - Ice Cream Run 5K, 10K, and Half Marathon by Califlow Runs

August 9, 2026
Long Beach, CA
Details →
Howl at the Moon – 5K, 10K, 10M, and Half Marathon
Running

Howl at the Moon – 5K, 10K, 10M, and Half Marathon

August 9, 2026
Long Beach, CA
Details →
Sun and Summit 5k, 10k, 15k, Half Marathon
Running

Sun and Summit 5k, 10k, 15k, Half Marathon

August 9, 2026
Los Angeles, CA
Details →
Summer Sensation 5k, 10k, 15k, Half Marathon
Running

Summer Sensation 5k, 10k, 15k, Half Marathon

August 15, 2026
Long Beach, CA
Details →

Running

Run Happyish 5K. 10K. Half Marathon by Califlow Runs

Long Beach, CA

Running

Run Happyish 5K. 10K. Half Marathon by Califlow Runs

August 16, 2026
Long Beach, CA
Details →
Pacific Breeze 5k, 10k, 15k, Half Marathon
Running

Pacific Breeze 5k, 10k, 15k, Half Marathon

August 16, 2026
Ventura, CA
Details →

Running

Long Beach Easy Breezy 5K, 10K, & Half Marathon by Califlow Runs

Long Beach, CA

Running

Long Beach Easy Breezy 5K, 10K, & Half Marathon by Califlow Runs

August 16, 2026
Long Beach, CA
Details →
Alien Invasion Man-5K 10K & Half Marathon - Health is Wealth Expo
Running

Alien Invasion Man-5K 10K & Half Marathon - Health is Wealth Expo

August 16, 2026
Long Beach, CA
Details →
One Love Run – 5K, 10K, 10M, and Half Marathon
Running

One Love Run – 5K, 10K, 10M, and Half Marathon

August 23, 2026
Long Beach, CA
Details →
Californian Dreamin 5K, 10K, & Half Marathon by Califlow Runs
Running

Californian Dreamin 5K, 10K, & Half Marathon by Califlow Runs

August 23, 2026
Long Beach, CA
Details →

Top Cities for Half Marathons in California

Long Beach (59)San Diego (5)

Half Marathons in Nearby States

ArizonaNevadaOregon

Frequently asked questions

How long is a half marathon?▾
A half marathon is 13.1 miles (21.1 kilometers). It is one of the most popular race distances in the US, attracting over 2 million finishers annually. Browse half marathons on RACE to find one near you.
How should I train for my first half marathon?▾
Most beginner training plans are 10-12 weeks long and gradually build your weekly mileage. A typical plan includes 3-4 runs per week with one long run that peaks around 10-11 miles before race day.
What is a good half marathon time?▾
The average US half marathon finish time is about 2 hours 10 minutes. Beginners often aim for under 2:30, while competitive runners target sub-1:45. Focus on finishing strong rather than a specific pace for your first race.
What are the biggest half marathons in the US?▾
The largest include the United Airlines NYC Half, RBC Brooklyn Half, Disney Princess Half Marathon, and the Rock 'n' Roll series events in Las Vegas, Nashville, and San Diego. You can find all of these on RACE.
← All Half MarathonsAll events in CaliforniaBrowse all 22,000+ events