| Morfelden-Walldorf to Rockville (Maryland) | 4,053.41 mi (6,523.34 km) |
| Morfelden-Walldorf to Rockville Centre (New York) | 3,840.64 mi (6,180.91 km) |
| Morfelden-Walldorf to Rockwall (Texas) | 5,109.60 mi (8,223.10 km) |
| Morfelden-Walldorf to Rocky Mount (North Carolina) | 4,224.19 mi (6,798.18 km) |
| Morfelden-Walldorf to Rocky Point (New York) | 3,800.35 mi (6,116.07 km) |
| Morfelden-Walldorf to Rocky River (Ohio) | 4,128.96 mi (6,644.93 km) |
| Morfelden-Walldorf to Roessleville (New York) | 3,758.71 mi (6,049.06 km) |
| Morfelden-Walldorf to Rogers (Arkansas) | 4,847.12 mi (7,800.68 km) |
| Morfelden-Walldorf to Rogers (Minnesota) | 4,379.47 mi (7,048.08 km) |
| Morfelden-Walldorf to Rohnert Park (California) | 5,651.55 mi (9,095.29 km) |
| Morfelden-Walldorf to Rolla (Missouri) | 4,675.13 mi (7,523.90 km) |
| Morfelden-Walldorf to Rolling Meadows (Illinois) | 4,333.19 mi (6,973.60 km) |
| Morfelden-Walldorf to Roma (Texas) | 5,554.79 mi (8,939.58 km) |
| Morfelden-Walldorf to Rome (Georgia) | 4,604.89 mi (7,410.86 km) |
| Morfelden-Walldorf to Rome (New York) | 3,802.91 mi (6,120.19 km) |
