Rockin' Riverfest 5K, 10K, Half Marathon

Get ready to ignite your Independence Day celebrations at the Rockin' Riverfest 5K, 10K, and Half Marathon, taking place on Saturday, July 4, 2026, in historic St. Charles, Missouri. This event kicks off a festive holiday weekend with a fun, fast, and family-friendly atmosphere, all starting from Frontier Park at 8:00 AM CDT. Runners can choose their challenge from the 5K, 10K, or the demanding half marathon, experiencing a dynamic course that balances speed with scenic beauty.

The Rockin' Riverfest course offers a unique blend of surfaces, beginning on the paved sections of Frontier Park before transitioning to the renowned Katy Trail (gravel) and winding through shaded single-track trails that hug the picturesque Missouri River. While generally flat and fast, ideal for setting a personal best, the inclusion of trail sections adds an engaging element for runners. Half marathon participants will complete two loops of this engaging route, while 5K and 10K runners tackle a single loop tailored to their distance. Aid stations are strategically placed along the course, offering water, sports drinks, and even pickle juice and ice to keep participants fueled and hydrated, especially given typical race day conditions in early July, which see highs around 90°F and lows around 71°F, with a 16% chance of precipitation.

Beyond the run, the Rockin' Riverfest is a celebration in itself, perfectly timed with the larger St. Charles Riverfest. Finishers are welcomed into the lively "Racers Village" with music, snacks, and refreshing drinks. All 5K, 10K, and Half Marathon participants receive a custom finisher's medal and a commemorative T-shirt, with free downloadable finish line photos and video to capture the memories. Your participation also supports a great cause, as proceeds benefit the St. Charles School District Cross-Country program. After crossing the finish line, immerse yourself in the vibrant downtown area, explore historic riverfront shops, and enjoy the broader Riverfest festivities, including live music and a spectacular fireworks display, making this race an unforgettable part of your Fourth of July weekend.