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Half Marathon Races in California (Page 8)

Browse 247+ upcoming half marathon races in California.

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SPASM Crystal Springs Trail Run

Aug 30, 2026
Woodside, CA
30.9M26.2M22M13.1M6.2M2M
66°
54°
0%

Noble Canyon 50K/15K

Sep 5, 2026
Pine Valley, CA
31.1M9.3M
83°
55°
2%

FIESTA 10K & MILE RUN - FRESNO

Sep 5, 2026
Fresno, CA
400M10K2M1M
95°
67°
0%

Diablo Trail Run

Sep 6, 2026
Clayton, CA
30.4M26.2M13.1M10M4M2M
82°
61°
1%

Mammoth Bar Trail Runs

Sep 6, 2026
Auburn, CA
13.1M6.2M
90°
60°
1%

Mendocino Running Festival

Sep 11, 2026
Mendocino, CA
12HR6HR1/2 Marathon10K
91°
52°
1%

The Honey Badger Half (& 10K/5K)

Sep 11, 2026
San Rafael, CA
13.1M10K5K
83°
54°
1%

Berkeley Trail Adventure

Sep 12, 2026
Berkeley, CA
31.1M21.7M1/2 Marathon10K
77°
54°
1%

Beer City Half™ Bishop Ranch

Sep 12, 2026
San Ramon, CA
13.1M10K5K1M
81°
60°
1%

National Chocolate Day: Run for Chocolates 5K/10K/13.1 LOS ANGELES

Sep 12, 2026
Los Angeles, CA
13.1M10K5K1M
85°
65°
1%

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SACRAMENTO

Sep 12, 2026
Sacramento, CA
13.1M10K5K1M
91°
60°
0%

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SAN DIEGO

Sep 12, 2026
San Diego, CA
13.1M10K5K1M
79°
67°
0%

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SAN FRANCISCO

Sep 12, 2026
San Francisco, CA
13.1M10K5K1M
70°
56°
1%

Seasonal Confusion 5K. 10K. Half Marathon by Califlow Runs

Sep 13, 2026
Long Beach, CA
13.1M6.2M3.1M
84°
65°
1%

Tierra Redonda Mountain Trail Run

Sep 19, 2026
Bradley, CA
48HR24HR12.4M
90°
50°
0%

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

Sep 19, 2026
Canoga Park, CA
13.1M10K5K
94°
59°
1%

Anime Fan and Fitness Festival

Sep 19, 2026
Gilroy, CA
400M10K5K
76°
53°
1%

Alameda Island Running Festival

Sep 20, 2026
Alameda, CA
13.1M6.2M3.1M1M
76°
57°
2%

Hill Valley 88 Miler ™

Sep 23, 2026
Mill Valley, CA
88M1M0.5M0.25M
82°
53°
2%

Ridge Rambler Half Marathon

Sep 26, 2026
Bridgeport, CA
1/2 Marathon
72°
42°
2%
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