“2 states.  4 towns. Innumerable hills.” That’s how the directors of the Buildup to Boston (now in its 47th year!) promote this fourth, final race of the series (5k, 10k, 15k, 25k spread over January to March).

“2 states.  4 towns. Innumerable hills.” That’s how the directors of the Buildup to Boston (now in its 47th year!) promote this fourth, final race of the series (5k, 10k, 15k, 25k spread over January to March).