River Day SwimFest and SwimRun 2026

The race.

The 11th Annual River Day Races takes place on August 8, 2026, in Norriton, PA, featuring four swim and swim-run events in the river. Participants can enter a 5K swim (starting 9:00 AM with a 3-hour cutoff), 1-mile swim (11:00 AM start, 1-hour cutoff), 800-meter swim (11:45 AM start, 30-minute cutoff), or SwimRun event combining an 800m swim, 5K run, and another 800m swim (11:40 AM start, 1:00 PM cutoff). Registration closes online at midnight on Thursday, August 6. Awards are given to the top three male and female finishers in overall and 10-year age group categories. The event includes a transition area for the SwimRun and an aid station along the 5K run course; participants may bring their own nutrition and escort kayakers.