Winter Classic 5K 2026

The Winter Classic 5K begins and ends in downtown Cambridge, Massachusetts. This winter road 5K follows a fast, flat course, with participants choosing their pace from a relaxed walk to a full sprint along Mass Ave. The field typically ranges from 1,000 to 5,000 participants, offering a busy local-race atmosphere without requiring a marathon-scale setup. Festive attire is encouraged but not required; there is no separate children's run, and the race does not qualify for the Boston Marathon.