| Middle River to Rockville (Maryland) | 43.02 mi (69.23 km) |
| Middle River to Rockville Centre (New York) | 173.43 mi (279.11 km) |
| Middle River to Rockwall (Texas) | 1,198.55 mi (1,928.88 km) |
| Middle River to Rocky Mount (North Carolina) | 245.08 mi (394.42 km) |
| Middle River to Rocky Point (New York) | 214.59 mi (345.35 km) |
| Middle River to Rocky River (Ohio) | 321.04 mi (516.66 km) |
| Middle River to Roessleville (New York) | 269.15 mi (433.16 km) |
| Middle River to Rogers (Arkansas) | 988.05 mi (1,590.11 km) |
| Middle River to Rogers (Minnesota) | 962.96 mi (1,549.74 km) |
| Middle River to Rohnert Park (California) | 2,463.22 mi (3,964.17 km) |
| Middle River to Rolla (Missouri) | 832.16 mi (1,339.23 km) |
| Middle River to Rolling Meadows (Illinois) | 635.57 mi (1,022.86 km) |
| Middle River to Roma (Texas) | 1,578.42 mi (2,540.22 km) |
| Middle River to Rome (Georgia) | 597.83 mi (962.12 km) |
| Middle River to Rome (New York) | 272.59 mi (438.70 km) |
