| South San Francisco to Wichita (Kansas) | 1,367.22 mi (2,200.32 km) |
| South San Francisco to Wichita Falls (Texas) | 1,360.03 mi (2,188.75 km) |
| South San Francisco to Wickliffe (Ohio) | 2,175.62 mi (3,501.32 km) |
| South San Francisco to Wildomar (California) | 402.10 mi (647.11 km) |
| South San Francisco to Wildwood (Florida) | 2,395.47 mi (3,855.13 km) |
| South San Francisco to Wildwood (Missouri) | 1,718.47 mi (2,765.62 km) |
| South San Francisco to Wilkes-Barre (Pennsylvania) | 2,465.90 mi (3,968.48 km) |
| South San Francisco to Wilkinsburg (Pennsylvania) | 2,269.03 mi (3,651.65 km) |
| South San Francisco to Williamsburg (Virginia) | 2,481.60 mi (3,993.75 km) |
| South San Francisco to Williamsport (Pennsylvania) | 2,406.51 mi (3,872.90 km) |
| South San Francisco to Williamstown (New Jersey) | 2,533.02 mi (4,076.50 km) |
| South San Francisco to Willimantic (Connecticut) | 2,646.52 mi (4,259.16 km) |
| South San Francisco to Williston (North Dakota) | 1,191.42 mi (1,917.40 km) |
| South San Francisco to Willmar (Minnesota) | 1,500.59 mi (2,414.96 km) |
| South San Francisco to Willoughby (Ohio) | 2,178.42 mi (3,505.83 km) |
