Running Races in San Diego, California
Explore running events in San Diego, California during December 2025.
Top Events
Calero Trail Run - Winter
Ultra
San Jose, CA
Sat, Dec 6, 2025
12:00 AM PST
The Krampus Cross Country 5k, 10k, Or Naughty Nine Miler (live Or Virtual)!
5K10K
San Francisco, CA
Mon, Dec 8, 2025
8:00 AM PST
Run For Mental Health 5k/10k/13.1 San Diego
5K10K1 Mile
San Diego, CA
Sat, Dec 13, 2025
7:30 AM PST
Run For Mental Health 5k/10k/13.1 San Francisco
5K10K1 Mile
San Francisco, CA
Sat, Dec 13, 2025
7:30 AM PST
San Diego Holiday Half Marathon & 5k
5KHalf-Marathon
San Diego, CA
Sat, Dec 20, 2025
7:30 AM PST
Santa Run Silicon Valley
5K
San Jose, CA
Sun, Dec 21, 2025
New Year's Run 5k/10k/13.1 San Diego
5K10K1 Mile
San Diego, CA
Sat, Dec 27, 2025
7:30 AM PST
New Year's Run 5k/10k/13.1 San Francisco
5K10K1 Mile
San Francisco, CA
Sat, Dec 27, 2025
7:30 AM PST