Embark on an extraordinary open-water challenge with the Three Rivers Marathon Swim, a premier 30K event set to take place on August 29, 2026, in the vibrant city of Pittsburgh, PA. This unique marathon swim is not just a test of endurance but also a powerful charity event, benefiting the Forever Fund to support families with infant cardiothoracic surgery costs at UPMC Children's Hospital of Pittsburgh. As one of the World's Top 100 River Swims and a component of the prestigious Pennsylvania Triple Crown of Open Water Swimming, this race offers a truly unparalleled experience.

The challenging 30-kilometer course navigates Pittsburgh's iconic waterways, comprising three distinct 10K segments—each an out-and-back 5K—through the Ohio, Monongahela, and Allegheny Rivers. Swimmers begin with a water start from the historic Point State Park fountain, initially enjoying a current assist on the Ohio River before turning to face the current. The journey continues against the current in the Monongahela, past landmarks like the Hot Metal Bridge, and concludes with a dynamic segment on the Allegheny River, featuring both tidal challenges and current assistance before a buoy finish near the starting point. While the Ohio typically offers calmer waters, participants should be prepared for potential boat traffic and headwinds on the Monongahela and Allegheny. Typical race day conditions in late August feature pleasant highs around 80F and lows around 61F, with a 14% chance of precipitation, and comfortable water temperatures averaging 72F.

Safety and support are paramount for this demanding swim. Each participant is flanked by two dedicated kayak volunteers providing essential supplies and feeding (such as high-carbohydrate drinks, gels, and fruits) every half hour, supported by powered escort boats, Pittsburgh River Rescue, local police, and the Coast Guard. Swimmers must adhere to a strict 12-hour overall cutoff, maintaining a 4-hour pace per 10K segment. Finishing this 14th annual event, organized by renowned open-water swimmer Darren Miller, is considered a significant milestone by participants, fostering a profound sense of accomplishment and resilience. Swimmers exit the water via a powered escort, returning to the Kayak Pittsburgh North Shore location.