What are the steepest streets in San Francisco?

It's a question you've likely been asked a million times by everyone from random tourists in Fisherman's Wharf to your own mother. And if you've dutifully gone to Google to research that question, then you'll likely find the SF Bureau of Engineering's outdated list from the last century.

It looks something like this:

1. Filbert between Leavenworth and Hyde (31.5% grade)
2. 22nd between Church and Vicksburg (31.5% grade)
3. Jones between Union and Filbert (29% grade)
4. Duboce between Buena Vista and Alpine (27.9% grade)
5. Jones between Green and Union (26% grade)
6. Webster between Vallejo and Broadway (26% grade)
7. Duboce between Alpine and Divisadero (25% grade)
8. Jones between Pine and California (24.8 grade)
9. Fillmore between Vallejo and Broadway (24% grade)

But don't be deceived! You'll notice that there are some seemingly very steep streets that are obviously missing from this list. What about Kearny Street just above Broadway, for instance?

We joined forces with Stephen Von Worley, who combined the National Elevation Dataset's data with an Open Street Maps grid, to come up with the real list of San Francisco's steepest streets. You're welcome.

The Real List of the Steepest Streets in San Francisco:

1. Bradford above Tompkins (41% grade)
2. Romolo between Vallejo and Fresno (37.5% grade)
3. Prentiss between Chapman and Powhattan (37% grade)
4. Nevada above Chapman (35% grade)
5. Baden above Mangels (34% grade)
6. Ripley between Peralta and Alabama (31.5% grade)
7. 24th between De Haro and Rhode Island (31.5% grade)
8. Filbert between Hyde and Leavenworth (31.5% grade)
9. 22nd between Vicksburg and Church (31.5% grade)
10. Broadway above Taylor (31% grade)