List of steepest roads and streets

This article lists the sections or streets and roads with the steepest gradients in the world.

Individual streets

Ffordd Pen Llech in Harlech, Wales was previously thought to have the steepest city street in the world and was given the Guinness World Record with a gradient at 37.45%, however after an appeal made by Baldwin street residents, both streets were reassessed and despite Ffordd Pen Llech having a greater gradient, the world's steepest Street was reinstated to Baldwin street, Dunedin.
Baldwin Street in Dunedin, New Zealand, may be the steepest residential street in the world; it reportedly averages 1:3.41 for 161 meters but its maximum is claimed to be 35% for an unknown distance.
Canton Avenue in Pittsburgh is said to have a 37% grade; the length of that grade is unknown.
Three streets in Los Angeles are steeper—28th Street in San Pedro at 33.3%, Eldred Street in Highland Park at 33%, and Baxter Street in Silver Lake at 32%.
Waipio Valley Road on the island of Hawai'i is said to be the steepest rural road in the United States, with some grades approaching 45%. It has been closed to non-local traffic.
An Unnamed road in San Isidro de El General, Costa Rica, is claimed to have a 40% to 44% grade, although this has yet to be fully verified.

San Francisco, California is known for having numerous steep streets:
* Filbert Street between Hyde and Leavenworth has a maximum gradient of 31.5%. The city map shows a descent of 65 feet, which based on a half-block being 206.25 horizontal feet makes the grade 31.5%, the official figure.
* 22nd Street shares the same 31.5% maximum gradient, between Vicksburg and Church Street., also one-way down.
* The sidewalk-only section of Broderick Street is steeper than Filbert in San Francisco, just under 35% grade
* The sidewalk-only block of Baker Street, just one block west of Broderick, also between Broadway and Vallejo is a bit steeper than Broderick.
* An unofficial survey of San Francisco streets declared the steepest street in San Francisco to be a 30-foot section of Bradford Street, paved in 2010, with a 40% grade.
* The curvy Lombard Street started as a 27% grade.
The cities of Houghton and Hancock in Michigan, US, have been noted for their steep streets.