| South San Francisco to Rowlett (Texas) | 1,490.29 mi (2,398.38 km) |
| South San Francisco to Roy (Utah) | 604.10 mi (972.20 km) |
| South San Francisco to Royal Kunia (Hawaii) | 2,397.14 mi (3,857.82 km) |
| South San Francisco to Royal Oak (Michigan) | 2,083.75 mi (3,353.47 km) |
| South San Francisco to Royal Palm Beach (Florida) | 2,557.29 mi (4,115.55 km) |
| South San Francisco to Royse City (Texas) | 1,501.47 mi (2,416.39 km) |
| South San Francisco to Ruskin (Florida) | 2,405.56 mi (3,871.37 km) |
| South San Francisco to Russellville (Alabama) | 1,938.31 mi (3,119.41 km) |
| South San Francisco to Russellville (Arkansas) | 1,628.69 mi (2,621.13 km) |
| South San Francisco to Ruston (Louisiana) | 1,712.92 mi (2,756.67 km) |
| South San Francisco to Rutherford (New Jersey) | 2,562.01 mi (4,123.15 km) |
| South San Francisco to Rutland (Vermont) | 2,586.17 mi (4,162.04 km) |
| South San Francisco to Sabana Grande (Puerto Rico) | 3,589.20 mi (5,776.26 km) |
| South San Francisco to Sachse (Texas) | 1,487.28 mi (2,393.55 km) |
| South San Francisco to Saco (Maine) | 2,711.32 mi (4,363.44 km) |
