Tonight: Amazing Race Canada semi-finals

Amazing Race Canada, CTV
It’s the semi-finals (Tuesday, Sept. 16 at 9 p.m. ET/PT on CTV and CTV GO) as four teams race to New Brunswick to fight for a spot in the finale. It’s an uphill battle as Racers claw their way through a gruelling Roadblock. Teams face a blizzard of a time at an Acadian birthday party, but a complicated coastal Detour leaves teams desperately waving a white flag.