Competitors in Tuesday night's Norwood Duathlon switch from running mode to biking mode in the transition from the first stage of the race to the second. The bike segment was followed by another run. 136 racers were entered. This race was the first in the four-race summer series, with the remaining races on Tuesdays, July 6, July 27, and August 3. NorthCountryNow photo by Craig Freilich.