The Capital City River Run is an annual race series in Lansing, Michigan, featuring a half marathon, a 5K walk/run, and Sohn’s Kid’s Race. The half marathon and 5K begin at 8 a.m. on Michigan Avenue. The event benefits the Impression 5 Science Center, which also manages packet pickup before and on race day. This series has been a local fixture for over thirty years.
The half marathon and 5K courses utilize Michigan Avenue, Grand River Avenue, the Michigan State University campus, the Lansing River Trail, and Adado Park, concluding on Grand Avenue. The River Trail provides the race's primary local character, extending approximately 13 miles alongside the Grand River and Red Cedar River, connecting Lansing with MSU. The trail system has been in place since the 1970s. The kid’s mile takes place on the Lansing River Trail near Impression 5. Young participants receive a museum visit, pizza party, goodie bag, and finisher medal. Half marathon and 5K runners are given a sweatshirt and medal, with chip timing provided by the Michigan Running Foundation.