Our 22nd season in 'Recreation Town/USA'! Easily, the flattest course on the Tour...you'll fly! A 1/2-mile swim in calm Lake Massapoag. A single 12-mile bike loop through Sharon, Easton, Mansfield and Foxboro neighborhoods. A lake view for much of the relaxing, tree-shaded 4.4-mile run. A quick 45-minute drive from Boston. Field Limit at Swim Start: 750.