| Monroe to Ridgeland (Mississippi) | 112.65 mi (181.29 km) |
| Monroe to Ridgewood (New Jersey) | 1,150.37 mi (1,851.34 km) |
| Monroe to Rifle (Colorado) | 1,000.07 mi (1,609.45 km) |
| Monroe to Rincon (Georgia) | 632.37 mi (1,017.70 km) |
| Monroe to Ringwood (New Jersey) | 1,146.37 mi (1,844.90 km) |
| Monroe to Río Grande (Puerto Rico) | 1,898.01 mi (3,054.55 km) |
| Monroe to Rio Grande City (Texas) | 586.62 mi (944.08 km) |
| Monroe to Rio Linda (California) | 1,695.80 mi (2,729.13 km) |
| Monroe to Rio Rancho (New Mexico) | 859.12 mi (1,382.61 km) |
| Monroe to Rio Rico (Arizona) | 1,108.80 mi (1,784.44 km) |
| Monroe to Ripon (California) | 1,673.78 mi (2,693.69 km) |
| Monroe to River Edge (New Jersey) | 1,152.29 mi (1,854.43 km) |
| Monroe to River Falls (Wisconsin) | 853.28 mi (1,373.22 km) |
| Monroe to River Forest (Illinois) | 688.68 mi (1,108.32 km) |
| Monroe to River Grove (Illinois) | 690.22 mi (1,110.80 km) |
