The Mystic River Herring Run and Paddle includes a 5K run/walk race, three paddling races (3, 9, and 12 miles), educational booths, children's activities, and more. All events are held at the DCR Blessing of the Bay Boathouse in Somerville. The 5K course continues along the Mystic River bike path and through DCR Torbert MacDonald Park. There are no street crossings on this flat course.
