Annual SPI Causeway Double Cross

The SPI Causeway Double Cross 10K takes place on February 21, 2026, offering runners a rare chance to conquer the Queen Isabella Causeway in an unforgettable race. Participants will start on South Padre Island, run the length of the iconic bridge, turn around at the Port Isabel side, and make their way back for a stunning round trip over the bay. This scenic challenge delivers breathtaking views and a one-of-a-kind running experience that can’t be found anywhere else in Texas. All finishers receive a commemorative medal, and proceeds from the race benefit the Laguna Madre Youth Center, making every mile meaningful. Whether you’re chasing a personal best or simply soaking in the views, the SPI Causeway Double Cross is an event that combines fitness, community, and coastal beauty.