| Monroe to Robertsville (New Jersey) | 1,123.65 mi (1,808.34 km) |
| Monroe to Robinson (Texas) | 304.57 mi (490.16 km) |
| Monroe to Robstown (Texas) | 466.91 mi (751.42 km) |
| Monroe to Rochester (Michigan) | 855.61 mi (1,376.97 km) |
| Monroe to Rochester (Minnesota) | 794.65 mi (1,278.87 km) |
| Monroe to Rochester (New Hampshire) | 1,364.18 mi (2,195.44 km) |
| Monroe to Rochester (New York) | 1,075.96 mi (1,731.60 km) |
| Monroe to Rochester Hills (Michigan) | 853.27 mi (1,373.20 km) |
| Monroe to Rock Hill (South Carolina) | 656.44 mi (1,056.44 km) |
| Monroe to Rock Island (Illinois) | 623.93 mi (1,004.11 km) |
| Monroe to Rock Springs (Wyoming) | 1,131.06 mi (1,820.27 km) |
| Monroe to Rockford (Illinois) | 692.94 mi (1,115.19 km) |
| Monroe to Rockledge (Florida) | 734.83 mi (1,182.59 km) |
| Monroe to Rocklin (California) | 1,686.29 mi (2,713.82 km) |
| Monroe to Rockport (Texas) | 430.05 mi (692.10 km) |
