Summer Classic 5K

Starts and finishes in beautiful downtown Cambridge, Massachusetts Make it a summer stroll or an all-out sprint down Massachusetts Avenue. The course is fast and flat so you can get back to the finish line sooner! Registration fees: $40 through 4/12 $42.50 from 4/13 through 5/17 $45 from 5/18 through 6/21 $50 from 6/22 through race day