Traveling by car on the Trans Canada Highway, you will cover 1,386 kilometres on a journey from Toronto to Thunder Bay. To show the size of the Province of Ontario, Montreal, Quebec (near the Ontario border) is 541 kilometres east of Toronto and Winnipeg, Manitoba (near the Ontario border) is 702 KM west of Thunder Bay.
The wrong option of 828 KM refers to the length of Highway 401, the main corridor that runs from the Quebec border to Windsor, at the border with Detroit, Michigan. The freeway connects cities like Kingston, Toronto, Kitchener and London along the way.
The wrong option of 1,964 KM refers to the distance along the Trans Canada Highway through Ontario from the Quebec border to the Manitoba border. This route would not go through Toronto, rather it would cut northwest through Ottawa and North Bay before heading toward Thunder Bay and beyond.
Toronto is a well-known city. Thunder Bay, not as much. The area was settled by Europeans as far back as 1683 as a fur trading post. Fort William was incorporated as a town in 1892 and as a city in 1907, nearly the same timeline as Port Arthur. In 1970, the two cities were amalgamated and became Thunder Bay.
Today, the population of Thunder Bay is around 110,000 with a metro number slightly higher at just over 130,000. Located on the shores of Lake Superior, forestry remains one of the chief drivers of the economy but the city is also a government services hub and home to Lakehead University.