501 Queen

The 501 Queen is an east-west streetcar route in Toronto, Ontario, Canada, operated by the Toronto Transit Commission (TTC). At 24.8 kilometres (15.4 mi), it is the TTC's longest surface route, the longest streetcar route operating in North America and one of the longest streetcar routes operating in the world. It stretches from Long Branch Loop (just west of Browns Line, adjacent to Long Branch GO Station) in the west to Neville Park Loop (just west of Victoria Park Avenue) in the east, running on Lake Shore Boulevard, in a reserved right-of-way at the median of The Queensway, and on Queen Street. The route was first instituted in the mid-to-late-19th century by private operators as a horse-drawn line, was later electrified, and was assumed by the TTC upon its creation in 1921. Service is provided 24 hours a day, though the route number changes to 301 Queen late at night.

The 501 Queen is one of the routes regularly operated with the TTC's double-length ALRVs. It runs with a combined service of five minutes during rush hour, four to ten at other times, and 10 to 30 overnight from approximately 1:00 a.m. until 5:00 a.m. The route is split into two branches, one running from Neville Park to Humber Loop on the Queensway, and the other running all the way to Long Branch. Every other streetcar is scheduled to go to Long Branch. The route interchanges with the Yonge-University-Spadina subway line at Queen and Osgoode stations.