With this victory, Hathaway has prolonged the championship duel between Scott Steckly and DJ Kennington who will have to wait until the season’s finale to battle it out.
Kennington settled for second in front of JR Fitzpatrick. Scott Steckly, who won the Heluva Good! Pole Award earlier in the day, finished fourth.
Kennington has now a five-point lead over Steckly heading into the season finale in two weeks.
Rookie Alex Guenette finished fifth at Barrrie, followed by Martin Roy, Ryley Seibert, Mark Dilley, Ron Beauchamp Jr., and Joy McColm.
It was second win of the season and third career victory for the 36-year-old. Hathaway won at Riverside International Speedway in Antigonish, N.S., in August.
The NASCAR Canadian Tire Series championship will be decided on Saturday, Sept. 21 in the Pinty's 250 at Kawartha Speedway in Peterborough, Ont.