Half Marathons in California in December
57 half marathons in California are on the calendar for December 2026, in San Jose, San Rafael, Long Beach, Fort Irwin and more. Tap a race for the course, weather, past results and how to register.
Calero Trail Run · San Jose, California
Peacock Gap Trail Run · San Rafael, California
Jingle Bell Jog – 5K, 10K, 10-Miler, Half Marathon · Long Beach, California
Merry Miles- 5K, 10K, and Half Marathon by Califlow Runs · Long Beach, California
The Blackhorse Marathon in Honor of MG(R) Sunell · Fort Irwin, California
Hark the Herald Angels Half Marathon · Tiburon, California
Holiday Fun 5k, 10k, 15k, Half Marathon · Van Nuys, California
Holiday Half Marathon, 10K, 5K, Kid's 1-Mile · Goleta, California
Magnolia Magic River Trail Run · Pilot Hill, California
Pulp Fiction: Royale with Speed 5K, 10K & 13.1 · Canoga Park, California
Run for Breast Cancer 5K/10K/13.1 LOS ANGELES · Los Angeles, California
Run for Breast Cancer 5K/10K/13.1 SACRAMENTO · Sacramento, California
Run for Breast Cancer 5K/10K/13.1 SAN DIEGO · San Diego, California
Run for Breast Cancer 5K/10K/13.1 SAN FRANCISCO · San Francisco, California
Santa To The Sea 1/2 Marathon, 1/4 Marathon & 5K · Oxnard, California
Summit Rock Half Marathon · Saratoga, California
Sunrise Marathon 5K/10K/13.1 LOS ANGELES · Los Angeles, California
Sunrise Marathon 5K/10K/13.1 SACRAMENTO · Sacramento, California
Sunrise Marathon 5K/10K/13.1 SAN DIEGO · San Diego, California
Sunrise Marathon 5K/10K/13.1 SAN FRANCISCO · San Francisco, California
The Syty Half Marathon · San Diego, California
Reindeer Run Riverside 5k, 10k, 15k, Half Marathon · Riverside, California
Santa Hustle Roseville · Roseville, California
Santa's Toy Trot – 5K, 10K, Half Marathon · Santa Monica, California
Winter Runderland 5K, 10K, & Half Marathon. Kids Dash · Long Beach, California
2026 Woodside Ramble - Winter · Redwood City, California
Feliz Navidad Run 5K 10K Half Marathon by Califlow Runs · Long Beach, California
Kris Kringle Jingle Run · Long Beach, California
Reindeer Run GP 5k, 10k, 15k, Half Marathon · Los Angeles, California
San Diego Holiday Half Marathon & 5K · San Diego, California
The Jingle Bell Dash Kids Dash, 1 Miler, 5K, 10K and Half Marathon & Santa Paws Doggie Run · Long Beach, California
Winter Whirl – 5K, 10K, Half Marathon · Fountain Valley, California
Woodside Ramble · Woodside, California
2026 Holiday Half and 5K - Sunday · Pomona, California
2026 Holiday Half Marathon · Pomona, California
2026 Holiday Half Marathon and 5K - Sunday · Pomona, California
2026 Holiday Running Festival - Sunday · Pomona, California
Chasing Santa – 5K, 10K, 10-Miler, Half Marathon · Long Beach, California
Dirty December Trail Run · San Diego, California
Holly Jolly Marathon · Camarillo, California
Santa’s Reindeer Run - 3rd Annual- 5K, 10K, and Half Marathon · Huntington Beach, California
Placerville's Holiday Jingle and Mingle Run · Placerville, California
Jingle All the Way - Christmas Day 5K, 10K, Half Marathon, Kids Dash by Califlow Runs · Long Beach, California
A Merry Christmas Run 5K/10K/13.1 LOS ANGELES · Los Angeles, California
A Merry Christmas Run 5K/10K/13.1 SACRAMENTO · Sacramento, California
A Merry Christmas Run 5K/10K/13.1 SAN DIEGO · San Diego, California
A Merry Christmas Run 5K/10K/13.1 SAN FRANCISCO · San Mateo, California
Happy Holidays 5k, 10k, 15k, Half Marathon · long beach, California
New Year's Run 5K/10K/13.1 LOS ANGELES · Los Angeles, California
New Year's Run 5K/10K/13.1 SACRAMENTO · Sacramento, California
New Year's Run 5K/10K/13.1 SAN DIEGO · San Diego, California
New Year's Run 5K/10K/13.1 SAN FRANCISCO · San Mateo, California
Ring Out the Old – 5K, 10K, Half Marathon · Encino, California
Countdown to the Finish – 5K, 10K, 10-Miler, Half Marathon · Long Beach, California
2026 Almost New Year's Eve · Castro Valley, California
Brazen New Year's Eve · Castro Valley, California
Last Dash Before Midnight 5K, 10K, & Half Marathon by Califlow Runs · Long Beach, California