Head to Monomoy Middle School in Chatham, MA on June 28, 2026 at 8:00am (with bib pickup starting at 6:30am) for the 45th Chatham Harbor Run, a USATF-sanctioned event on a certified course hosted by the Cape Cod Athletic Club and race director Howard Tansey. You'll compete for finisher medals and awards in overall and age group categories, with the option to join a team relay (limited to 40 teams) and shuttle service provided to handle transition logistics. The event benefits Monomoy Dollars for Scholars and club scholarships, plus you can save $10 by signing up for both this race and the fall 10K at the same time!