| Middle River to Romeoville (Illinois) | 632.96 mi (1,018.65 km) |
| Middle River to Romulus (Michigan) | 413.87 mi (666.06 km) |
| Middle River to Ronkonkoma (New York) | 201.55 mi (324.37 km) |
| Middle River to Roosevelt (New York) | 176.44 mi (283.95 km) |
| Middle River to Rosamond (California) | 2,302.91 mi (3,706.18 km) |
| Middle River to Rosaryville (Maryland) | 45.27 mi (72.86 km) |
| Middle River to Roscoe (Illinois) | 690.15 mi (1,110.68 km) |
| Middle River to Rose Hill (Virginia) | 53.11 mi (85.48 km) |
| Middle River to Roseburg (Oregon) | 2,419.12 mi (3,893.19 km) |
| Middle River to Rosedale (California) | 2,343.15 mi (3,770.93 km) |
| Middle River to Rosedale (Maryland) | 4.59 mi (7.39 km) |
| Middle River to Roselle (Illinois) | 637.15 mi (1,025.40 km) |
| Middle River to Roselle (New Jersey) | 146.00 mi (234.96 km) |
| Middle River to Roselle Park (New Jersey) | 146.25 mi (235.37 km) |
| Middle River to Rosemead (California) | 2,315.41 mi (3,726.30 km) |
