That Dam Race: Calero Reservoir San Jose, CA   Jun 27, 2026

Welcome to That Dam Race—an unforgettable endurance challenge set in the stunning landscape of Calero County Park.

Whether you’re taking on the Full Marathon, Half Marathon, or 13K, this course is designed to test your grit and reward you with some of the most breathtaking views in the South Bay. Expect a hilly, challenging terrain that will push your limits while showcasing the raw beauty of California’s outdoors.

Runners will wind through rolling hills lined with iconic California oak trees, vibrant native plants, and wide-open vistas that overlook the park’s scenic reservoirs and valleys. Along the way, keep an eye out for local wildlife—you might spot deer, hawks, or other native species that call this park home.

This isn’t just a race—it’s an experience. That Dam Race combines physical challenge, natural beauty, and an electric race-day atmosphere to create something truly unforgettable. Whether you’re chasing a PR or just looking to conquer the course, this is one race you don’t want to miss.