| National City to Rockville (Maryland) | 2,261.11 mi (3,638.91 km) |
| National City to Rockville Centre (New York) | 2,445.34 mi (3,935.39 km) |
| National City to Rockwall (Texas) | 1,198.25 mi (1,928.40 km) |
| National City to Rocky Mount (North Carolina) | 2,238.89 mi (3,603.15 km) |
| National City to Rocky Point (New York) | 2,481.67 mi (3,993.86 km) |
| National City to Rocky River (Ohio) | 2,020.28 mi (3,251.33 km) |
| National City to Roessleville (New York) | 2,438.10 mi (3,923.74 km) |
| National City to Rogers (Arkansas) | 1,327.50 mi (2,136.41 km) |
| National City to Rogers (Minnesota) | 1,522.81 mi (2,450.72 km) |
| National City to Rohnert Park (California) | 503.06 mi (809.59 km) |
| National City to Rolla (Missouri) | 1,469.48 mi (2,364.90 km) |
| National City to Rolling Meadows (Illinois) | 1,713.19 mi (2,757.11 km) |
| National City to Roma (Texas) | 1,168.10 mi (1,879.87 km) |
| National City to Rome (Georgia) | 1,835.18 mi (2,953.44 km) |
| National City to Rome (New York) | 2,354.35 mi (3,788.96 km) |
