Canton Avenue is a street in Pittsburgh's Beechview neighborhood which is the steepest officially recorded public street in the United States.

[4][5][6] The Guinness Book of World Records uses a 10m section to define the world's steepest street, currently held by Baldwin Street, in Dunedin, New Zealand, with a gradient of 34.8%.

[7] This record is disputed; Pittsburgh news and international media have claimed Canton Avenue is the steepest street in the world.

[8][9][10] The United States record is also disputed, as Bradford Street in San Francisco includes a 39% grade nine meters long[11] and Waipio Valley Road has sections as steep as a 45% grade.

[12][13][14][15] In March 2016 Canton Avenue was the subject of a commercial,[16] featuring freeskier Bene Mayr, snowboarder Heikki Sorsa, downhill mountain biker Aaron Gwin, and racing driver Mattias Ekström for the Audi Quattro A4 automobile.