135 Upcoming Half Marathon Races Near Altadena, CA

Endless Summer in the LBC 5K, 10K, & Half Marat...

Long Beach, CA

Saturday, July 11th, 2026

10K

Half

Fast

View details for race Endless Summer in the LBC 5K, 10K, & Half Marathon by Califlow Runs

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

Long beach, CA

Sunday, July 12th, 2026

15K

10K

View details for race Summer Break 5k, 10k, 15k, Half Marathon

LBC Summer Breeze – 5K, 10K, 10M, and Half Mara...

Long Beach, CA

Sunday, July 12th, 2026

10K

15K

View details for race LBC Summer Breeze – 5K, 10K, 10M, and Half Marathon

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

Los Angeles, CA

Saturday, July 18th, 2026

Half

15K

View details for race Hot to Trot 5k, 10k, 15k, Half Marathon

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

South El Monte, CA

Sunday, July 19th, 2026

10K

Half

View details for race Rockin’ Summer 5k, 10k, 15k, Half Marathon

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

Long Beach, CA

Saturday, July 25th, 2026

10K

Half

View details for race LBC - Good Vibes Run 5K, 10K, & Half Marathon

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

Long beach, CA

Sunday, July 26th, 2026

10K

Half

View details for race Summer Fun 5k, 10k, 15k, Half Marathon

Glow Run Night Glow Run 5K 10K Half Marathon - ...

Long Beach, CA

Sunday, July 26th, 2026

10K

Half

Fast

View details for race Glow Run Night Glow Run 5K 10K Half Marathon - SummerWeen Series by Califlow Runs

Tiki Time Run: Paradise Run 5K, 10K, & Half Ma...

Long Beach, CA

Saturday, August 1st, 2026

10K

Half

View details for race Tiki Time Run: Paradise Run 5K, 10K, & Half Marathon by Califlow Runs

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

Long Beach, CA

Saturday, August 1st, 2026

10K

10 Miles

View details for race Dog Days of Summer – 5K, 10K, 10M, and Half Marathon

Lucky 8 5k, 10k, 15k, Half Marathon

Long beach, CA

Saturday, August 8th, 2026

15K

Half

View details for race Lucky 8 5k, 10k, 15k, Half Marathon

Sundae Funday - Ice Cream Run 5K, 10K, and Half...

Long Beach, CA

Sunday, August 9th, 2026

10K

Half

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

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

Los Angeles, CA

Sunday, August 9th, 2026

Half

10K

Trail

View details for race Sun and Summit 5k, 10k, 15k, Half Marathon

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

Long Beach, CA

Sunday, August 9th, 2026

10K

15K

View details for race Howl at the Moon – 5K, 10K, 10M, and Half Marathon

The TRON Night Run: Neon Grid 5K, 10K & Half Ma...

Canoga Park, CA

Saturday, August 15th, 2026

10K

Half

Trail

View details for race The TRON Night Run: Neon Grid 5K, 10K & Half Marathon

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

Long beach, CA

Saturday, August 15th, 2026

10K

Half

15K

View details for race Summer Sensation 5k, 10k, 15k, Half Marathon

Long Beach Easy Breezy 5K, 10K, & Half Marathon...

Long Beach, CA

Sunday, August 16th, 2026

10K

Half

Fast

View details for race Long Beach Easy Breezy 5K, 10K, & Half Marathon by Califlow Runs

Never Say Die Run 5K. 10K. Half Marathon An 80s...

Long Beach, CA

Sunday, August 16th, 2026

10K

Half

View details for race Never Say Die Run 5K. 10K. Half Marathon An 80s Nostalgia Adventure Run

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

Long Beach, CA

Sunday, August 16th, 2026

10K

Half

Fast

View details for race Run Happyish 5K. 10K. Half Marathon by Califlow Runs

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

Long beach, CA

Saturday, August 22nd, 2026

15K

10K

Half

View details for race Summer Breeze 5k, 10k, 15k, Half Marathon

Californian Dreamin 5K, 10K, & Half Marathon

Long Beach, CA

Sunday, August 23rd, 2026

10K

Half

View details for race Californian Dreamin 5K, 10K, & Half Marathon

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

Long Beach, CA

Sunday, August 23rd, 2026

10K

10 Miles

View details for race One Love Run – 5K, 10K, 10M, and Half Marathon

Shoreline Park Half Marathon - ShorelineParkHal...

Long Beach, CA

Sunday, August 23rd, 2026

Half

10K

View details for race Shoreline Park Half Marathon - ShorelineParkHalf.com

Night of the Running Dead 5K, 10K, 1 Miler, Hal...

Long Beach, CA

Saturday, August 29th, 2026

10K

Half

Fast

View details for race Night of the Running Dead 5K, 10K, 1 Miler, Half Marathon SummerWeen Series by Califlow Runs

Beach Day 5k, 10k, 15k, Half Marathon

Long beach, CA

Saturday, September 5th, 2026

Half

15K

View details for race Beach Day 5k, 10k, 15k, Half Marathon

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

Van Nuys, CA

Sunday, September 6th, 2026

Half

10K

15K

View details for race Summer Day 5k, 10k, 15k, Half Marathon

Pirates Plunder – 5K, 10K, 10-miler, and Half ...

Long Beach, CA

Sunday, September 6th, 2026

10K

10 Miles

View details for race Pirates Plunder – 5K, 10K, 10-miler, and Half Marathon

Labor Day 5k, 10k, 15k, Half Marathon

Long beach, CA

Monday, September 7th, 2026

15K

10K

View details for race Labor Day 5k, 10k, 15k, Half Marathon

Long Beach Labor Day Run - Merging Forces 5K, 1...

Long Beach, CA

Monday, September 7th, 2026

10K

1 Mile

Fast

View details for race Long Beach Labor Day Run - Merging Forces 5K, 10K, Half Marathon, 1 Miler, Kids Dash

Rise to the Top 5k, 10k, 15k, Half Marathon

Los Angeles, CA

Saturday, September 12th, 2026

15K

10K

Trail

View details for race Rise to the Top 5k, 10k, 15k, Half Marathon

Seasonal Confusion 5K. 10K. Half Marathon by Ca...

Long Beach, CA

Sunday, September 13th, 2026

10K

Half

Fast

View details for race Seasonal Confusion 5K. 10K. Half Marathon by Califlow Runs

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

Long beach, CA

Sunday, September 13th, 2026

Half

10K

15K

View details for race Beach Fun 5k, 10k, 15k, Half Marathon

Bayside Saved by the Bell 5K, 10K & Half Marathon

Canoga Park, CA

Saturday, September 19th, 2026

10K

Half

Fast

View details for race Bayside Saved by the Bell 5K, 10K & Half Marathon

Jurassic Jaunt – 5K, 10K, 10M, and Half Marathon

Long Beach, CA

Saturday, September 19th, 2026

10K

Half

View details for race Jurassic Jaunt – 5K, 10K, 10M, and Half Marathon

La Noche de las Brujas Run -SummerWeen Series 5...

Long Beach, CA

Sunday, September 20th, 2026

10K

Half

Fast

View details for race La Noche de las Brujas Run -SummerWeen Series 5K 10K Half by Califlow Runs

Hot Pursuit 5k, 10k, 15k, Half Marathon

Long beach, CA

Saturday, September 26th, 2026

15K

10K

View details for race Hot Pursuit 5k, 10k, 15k, Half Marathon

Golden Strides 5k, 10k, 15k, Half Marathon

Riverside, CA

Sunday, September 27th, 2026

Half

10K

View details for race Golden Strides 5k, 10k, 15k, Half Marathon

Take Me to Your Pizza : Alien Dash 5K. 10K. Hal...

Long Beach, CA

Sunday, September 27th, 2026

10K

Half

Fast

View details for race Take Me to Your Pizza : Alien Dash 5K. 10K. Half Marathon by Califlow Runs

The Retro Run – 5K, 10k, 10m, and Half Marathon

Long Beach, CA

Sunday, September 27th, 2026

10K

10 Miles

View details for race The Retro Run – 5K, 10k, 10m, and Half Marathon

Mean Girls 5K, 10K & Half Marathon

Canoga Park, CA

Saturday, October 3rd, 2026

10K

Half

Fast

View details for race Mean Girls 5K, 10K & Half Marathon

Haunted Heroes 5k, 10k, 15k, Half Marathon

Long beach, CA

Saturday, October 3rd, 2026

Half

10K

15K

View details for race Haunted Heroes 5k, 10k, 15k, Half Marathon

Haunted Heroes 5k, 10k, 15k, Half Marathon

Valencia, CA

Sunday, October 4th, 2026

Half

10K

View details for race Haunted Heroes 5k, 10k, 15k, Half Marathon

2026 2XU Long Beach Marathon & Half Marathon

Long Beach, CA

Saturday, October 10th, 2026

Half

Marathon

View details for race 2026 2XU Long Beach Marathon & Half Marathon

Spooky Dam 5k, 10k, 15k, Half Marathon

Lake View Terrace, CA

Saturday, October 17th, 2026

Half

10K

View details for race Spooky Dam 5k, 10k, 15k, Half Marathon

SPACEROCK Trail Race

Agua Dulce, CA

Saturday, October 17th, 2026

15K

10K

Trail

View details for race SPACEROCK Trail Race

Back to the Future: 88 MPH Dash 5K, 10K & Half

Canoga Park, CA

Saturday, October 17th, 2026

10K

Half

View details for race Back to the Future: 88 MPH Dash 5K, 10K & Half

Night of the Living Runners – 5K, 10K, 10-Miler...

Long Beach, CA

Saturday, October 17th, 2026

10K

10 Miles

View details for race Night of the Living Runners – 5K, 10K, 10-Miler, Half Marathon

Jeepers Creepers Marathon 2026 - JeepersCreeper...

Santa Clarita, CA

Sunday, October 18th, 2026

Marathon

Half

10K

View details for race Jeepers Creepers Marathon 2026 - JeepersCreepersMarathon.com

Witches Wave - Halloween Run 5K, 10K, and Half ...

Huntington Beach, CA

Sunday, October 18th, 2026

10K

Half

Fast

View details for race Witches Wave - Halloween Run 5K, 10K, and Half Marathon

RunThrough USA Long Beach 5k,10k & Half Maratho...

Long Beach, CA

Saturday, October 24th, 2026

10K

Half

View details for race RunThrough USA Long Beach 5k,10k & Half Marathon Race

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