| South San Francisco to Rome (New York) | 2,464.84 mi (3,966.78 km) |
| South San Francisco to Romeoville (Illinois) | 1,834.22 mi (2,951.89 km) |
| South San Francisco to Romulus (Michigan) | 2,074.43 mi (3,338.48 km) |
| South San Francisco to Ronkonkoma (New York) | 2,612.51 mi (4,204.42 km) |
| South San Francisco to Roosevelt (New York) | 2,590.72 mi (4,169.36 km) |
| South San Francisco to Rosamond (California) | 303.20 mi (487.95 km) |
| South San Francisco to Rosaryville (Maryland) | 2,450.41 mi (3,943.55 km) |
| South San Francisco to Roscoe (Illinois) | 1,785.92 mi (2,874.15 km) |
| South San Francisco to Rose Hill (Virginia) | 2,435.30 mi (3,919.23 km) |
| South San Francisco to Roseburg (Oregon) | 387.90 mi (624.27 km) |
| South San Francisco to Rosedale (California) | 237.33 mi (381.95 km) |
| South San Francisco to Rosedale (Maryland) | 2,458.67 mi (3,956.84 km) |
| South San Francisco to Roselle (Illinois) | 1,833.87 mi (2,951.32 km) |
| South San Francisco to Roselle (New Jersey) | 2,556.38 mi (4,114.09 km) |
| South San Francisco to Roselle Park (New Jersey) | 2,555.86 mi (4,113.26 km) |
