River Rat Run
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Event overview
The River Rat Run takes place on April 25, 2026 in Yankton, South Dakota. The event offers three chip-timed running distances:
- Half Marathon
- 10K
- 5K run/walk
The race began in 2009 to honor a service member who died in 2005 during Operation Iraqi Freedom. All race proceeds are donated to local nonprofit organizations. The event does not offer a virtual option. Registration opens October 1, 2025, and entry fees increase after January 31, 2026. Race T-shirts are guaranteed only for participants who register by midnight on the Sunday before race day.
Course, timing and logistics
All courses run through the Lewis and Clark Lake Recreation Area, using newly paved trails that follow wooded areas and lake shorelines with two short grass connectors between trail sections. The course is chip timed and includes video and manual iPad backup. Packet pick-up and new registrations are available the Friday before the race at Ace Bike & Fitness, 2404 Broadway, Yankton (4:30 to 7:30 p.m.). Race-day check-in is at the Gavins Point Area picnic shelter and opens about one hour before each race, closing 15 minutes before the start. No race-day registrations will be accepted. Photography on race day is provided by Berry’s Photography. Prizes are awarded to overall male and female winners and to first and second place in each male and female age division (1–19, 20–29, 30–39, 40–49, 50–59, 60–69, 70–99). Only half-marathon participants receive finisher medals. Visit the organization's website for the most recent information.
