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Quote Originally Posted by found on google
The Steepest Streets in the City
1. Filbert between Leavenworth and Hyde (31.5% grade)
2. 22nd Street 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)
(Source: San Francisco Almanac)