Elias Hart was walking on the trail around 8 p.m. Thursday when the bear appeared in front of him.
"I've never seen bears, not like this before, right up close in my face," he said. "I thought I was done."
Hart tried to turn around, but the bear grabbed his right leg and took him to the ground, the Canadian Broadcasting Corp. said.
Hart reached for a nearby fence to pull himself up, started yelling at the bear as loud as he could and climbed over the fence.
Just as the bear got to the top of the fence to follow Hart, cars passed by on the nearby road and scared the bear back into the forest, CBC Said.
Hart escaped the attack with only minor scrapes.
Officers plan to set up some traps to try to track down the bear, CBC reported.
Conservation officer Sgt. Steve Jacobi said he expects the bear will be killed due to its aggressive behavior.