| South San Francisco to Ramsey (New Jersey) | 2,556.78 mi (4,114.75 km) |
| South San Francisco to Rancho Cordova (California) | 89.80 mi (144.51 km) |
| South San Francisco to Rancho Cucamonga (California) | 364.93 mi (587.30 km) |
| South San Francisco to Rancho Mirage (California) | 430.27 mi (692.46 km) |
| South San Francisco to Rancho Palos Verdes (California) | 352.54 mi (567.36 km) |
| South San Francisco to Rancho San Diego (California) | 458.75 mi (738.29 km) |
| South San Francisco to Rancho Santa Margarita (California) | 387.82 mi (624.14 km) |
| South San Francisco to Randallstown (Maryland) | 2,442.64 mi (3,931.06 km) |
| South San Francisco to Rantoul (Illinois) | 1,838.00 mi (2,957.98 km) |
| South San Francisco to Rapid City (South Dakota) | 1,093.45 mi (1,759.74 km) |
| South San Francisco to Ravenna (Ohio) | 2,191.03 mi (3,526.13 km) |
| South San Francisco to Raymondville (Texas) | 1,629.37 mi (2,622.22 km) |
| South San Francisco to Raymore (Missouri) | 1,513.80 mi (2,436.23 km) |
| South San Francisco to Raytown (Missouri) | 1,512.20 mi (2,433.65 km) |
| South San Francisco to Reading (Ohio) | 2,043.55 mi (3,288.77 km) |
