| Serpa to Rosemont (California) | 5,683.43 mi (9,146.59 km) |
| Serpa to Rosemount (Minnesota) | 4,249.34 mi (6,838.65 km) |
| Serpa to Rosenberg (Texas) | 4,910.15 mi (7,902.12 km) |
| Serpa to Roseville (California) | 5,671.49 mi (9,127.39 km) |
| Serpa to Roseville (Michigan) | 3,852.79 mi (6,200.47 km) |
| Serpa to Roseville (Minnesota) | 4,244.92 mi (6,831.53 km) |
| Serpa to Rossmoor (California) | 5,771.54 mi (9,288.40 km) |
| Serpa to Rossville (Maryland) | 3,622.86 mi (5,830.42 km) |
| Serpa to Roswell (Georgia) | 4,173.21 mi (6,716.13 km) |
| Serpa to Roswell (New Mexico) | 5,182.15 mi (8,339.86 km) |
| Serpa to Round Lake (Illinois) | 4,098.29 mi (6,595.57 km) |
| Serpa to Round Lake Beach (Illinois) | 4,096.10 mi (6,592.03 km) |
| Serpa to Round Rock (Texas) | 4,964.12 mi (7,988.98 km) |
| Serpa to Rowland Heights (California) | 5,755.03 mi (9,261.83 km) |
| Serpa to Rowlett (Texas) | 4,818.62 mi (7,754.81 km) |
