Spring Classic 5K

Start and finish in beautiful downtown Cambridge, Massachusetts. Take a springtime stroll or sprint down Mass Ave. The course is fast and flat so you can get back to the post-race party sooner! Registration fees: $40 – until 1/20 $42.50 – 1/21 to 2/22 $45 – 2/23 to 3/22 $50 – 3/23 to race day (if available)