| Monroe to Rockville (Maryland) | 949.57 mi (1,528.18 km) |
| Monroe to Rockville Centre (New York) | 1,164.14 mi (1,873.50 km) |
| Monroe to Rockwall (Texas) | 254.92 mi (410.26 km) |
| Monroe to Rocky Mount (North Carolina) | 848.45 mi (1,365.45 km) |
| Monroe to Rocky Point (New York) | 1,205.25 mi (1,939.67 km) |
| Monroe to Rocky River (Ohio) | 835.98 mi (1,345.39 km) |
| Monroe to Roessleville (New York) | 1,218.74 mi (1,961.37 km) |
| Monroe to Rogers (Arkansas) | 287.86 mi (463.27 km) |
| Monroe to Rogers (Minnesota) | 878.95 mi (1,414.53 km) |
| Monroe to Rohnert Park (California) | 1,761.51 mi (2,834.88 km) |
| Monroe to Rolla (Missouri) | 375.42 mi (604.18 km) |
| Monroe to Rolling Meadows (Illinois) | 696.59 mi (1,121.06 km) |
| Monroe to Roma (Texas) | 592.53 mi (953.59 km) |
| Monroe to Rome (Georgia) | 415.36 mi (668.46 km) |
| Monroe to Rome (New York) | 1,164.83 mi (1,874.61 km) |
