Run For Breast Cancer 5K/10K/13.1 SAN DIEGO

Run For Breast Cancer 5K/10K/13.1 SAN DIEGO is held in San Diego, California, on December 12, 2026, raising awareness and funds for the fight against breast cancer. The half marathon (13.1 miles), the 10K, the 5K and a family one-mile fun run all start at 7:30 a.m. The event is open to every age and ability, walkers included, and timing is optional. Registration includes a race shirt, a finisher medal, a towel or gift, a digital training pack and access to local running clubs, shipped directly to you, and there is a virtual entry.

For a first half marathon, a relaxed and supportive field is worth more than a fast course: nobody is racing past you at mile ten. Give yourself ten to twelve weeks with one long run per week and go out slower than feels right. If that block is not behind you, the 10K covers the same morning at a fraction of the risk. Miles you log after the event add to the money raised, so the finish line is not the end of it.