Swim Across America - St. Louis Open Water Swim

Swim Across America, the national nonprofit organization that makes waves to fight cancer through charity swims across the U.S., will host the 11th annual Swim Across America - St. Louis Open Water Swim on Saturday, August 29, 2026, at Alpine Lake at Innsbrook Resort in Innsbrook, Missouri. Participants can choose from a half-mile, 1-mile or 2-mile open water swim, with proceeds supporting cutting-edge cancer research at Siteman Cancer Center at Barnes-Jewish Hospital and WashU Medicine. Those who cannot swim in person can still volunteer, donate or participate virtually through SAA My Way. Learn more at swimacrossamerica.org/stlouis.

Since its launch in 2016, Swim Across America - St. Louis has raised more than $2.5 million for Siteman Cancer Center. During the past decade, the event has grown into one of the largest gatherings for the regional swim community, welcoming nearly 600 participants each year, along with hundreds of volunteers, spectators and supporters and appearances by Olympic gold medalists and other special guests. The swim has reached capacity for the past four years.

Nationally, Swim Across America has raised more than $150 million for cancer research since its founding in 1987 and has helped fund clinical trials that contributed to the FDA-approved cancer immunotherapy medications Keytruda, Opdivo, Yervoy and Tecentriq. In the past year, Swim Across America funded a breakthrough clinical trial at Memorial Sloan Kettering that showed that immunotherapy alone could successfully treat certain types of cancer. The organization also recently awarded two first-of-its-kind gene editing innovation grants to the Alliance for Cancer Gene Therapy and Dana-Farber Cancer Institute, advancing novel CRISPR gene and base editing techniques used in targeted therapies, immunotherapies and cellular therapies. Swim Across America supports more than 60 cancer research projects annually, has eight named Swim Across America labs, and supports work at many of the nation’s leading cancer institutions.

For more information, to join as a swimmer, volunteer, or to participate virtually or donate to Swim Across America - St. Louis, visit swimacrossamerica.org/stlouis.