King's Highway 35, commonly referred to as Highway 35, is a provincially maintained highway in the Canadian province of Ontario, linking Highway 401 with the Kawartha Lakes, Haliburton, and Algonquin Provincial Park. The highway travels from west of Newcastle, through Lindsay, near Fenelon Falls, Coboconk, Minden Hills, and into Haliburton before terminating at Highway 60 to the west of Algonquin Park. Within those areas, it services the communities of Orono, Cameron, Rosedale, Norland, Moore Falls, Miners Bay, Lutterworth, Carnarvon, Buttermilk Falls, Halls Lake, Pine Springs and Dorset. The winding course of the road, combined with the picturesque views offered along its length, have led some to declare it the most scenic highway in Ontario.

King's Highway 401, commonly referred to as Highway 401 and also known by its official name as the Macdonald–Cartier Freeway or colloquially referred to as the four-oh-one, is a controlled-access 400-series highway in the Canadian province of Ontario. It stretches 828 kilometres (514 mi) from Windsor in the west to the Ontario–Quebec border in the east. The part of Highway 401 that passes through Toronto is North America's busiest highway, and one of the widest. Together with Quebec Autoroute 20, it forms the road transportation backbone of the Quebec City–Windsor Corridor, along which over half of Canada's population resides. It is also a Core Route in the National Highway System of Canada. The route is maintained by the Ministry of Transportation of Ontario (MTO) and patrolled by the Ontario Provincial Police. The speed limit is 100 km/h (62 mph) throughout its length, with the only exceptions being the posted 80 km/h (50 mph) limit westbound in Windsor and in most construction zones, along with a 110 km/h (68 mph) speed limit between Windsor and Tilbury.