| Mercerville to Rockville (Maryland) | 153.33 mi (246.77 km) |
| Mercerville to Rockville Centre (New York) | 62.80 mi (101.06 km) |
| Mercerville to Rockwall (Texas) | 1,303.87 mi (2,098.37 km) |
| Mercerville to Rocky Mount (North Carolina) | 339.90 mi (547.02 km) |
| Mercerville to Rocky Point (New York) | 104.02 mi (167.40 km) |
| Mercerville to Rocky River (Ohio) | 383.70 mi (617.51 km) |
| Mercerville to Roessleville (New York) | 176.23 mi (283.62 km) |
| Mercerville to Rogers (Arkansas) | 1,087.30 mi (1,749.84 km) |
| Mercerville to Rogers (Minnesota) | 1,015.13 mi (1,633.70 km) |
| Mercerville to Rohnert Park (California) | 2,538.67 mi (4,085.60 km) |
| Mercerville to Rolla (Missouri) | 927.41 mi (1,492.53 km) |
| Mercerville to Rolling Meadows (Illinois) | 704.41 mi (1,133.64 km) |
| Mercerville to Roma (Texas) | 1,688.49 mi (2,717.36 km) |
| Mercerville to Rome (Georgia) | 708.59 mi (1,140.37 km) |
| Mercerville to Rome (New York) | 210.66 mi (339.02 km) |
