Yonge Street was formerly a part of Highway 11, which led to claims that Yonge Street was the longest street in the world. Running from the shores of Lake Ontario, through central and northern Ontario to the Ontario-Minnesota border at Rainy River, together they were over 1,896 kilometres (1,178 mi) long. But Yonge Street could only be called the longest street in the world if ''Highway 11'' and ''Yonge Street'' were fully synonymous, which has never been the case.

What's the best answer to this question: is yonge street in toronto the longest in the world?
no