Arctic Cat racer Tyler Michaud of Alton blasts off from the starting gate at Saturday’s day-long Snowmobile Hill Climb at Black Mountain Ski Resort in Rumford. Michaud was one of 105 registered riders, which included men, women and children racing in several classes based on sizes of their snowmobile engines.

During Saturday’s Snowmobile Hill Climb at Black Mountain Ski Resort in Rumford, event starter Mike Chiasson, right, of Mexico leans forward after waving a green flag and signaling a snowmobile racer to open the throttle and zoom up the mountain.