| Norristown to Rockville (Maryland) | 120.39 mi (193.75 km) |
| Norristown to Rockville Centre (New York) | 97.05 mi (156.18 km) |
| Norristown to Rockwall (Texas) | 1,268.83 mi (2,041.98 km) |
| Norristown to Rocky Mount (North Carolina) | 316.75 mi (509.76 km) |
| Norristown to Rocky Point (New York) | 138.15 mi (222.33 km) |
| Norristown to Rocky River (Ohio) | 353.05 mi (568.18 km) |
| Norristown to Roessleville (New York) | 195.02 mi (313.85 km) |
| Norristown to Rogers (Arkansas) | 1,052.31 mi (1,693.53 km) |
| Norristown to Rogers (Minnesota) | 987.94 mi (1,589.94 km) |
| Norristown to Rohnert Park (California) | 2,507.09 mi (4,034.77 km) |
| Norristown to Rolla (Missouri) | 892.70 mi (1,436.67 km) |
| Norristown to Rolling Meadows (Illinois) | 673.45 mi (1,083.81 km) |
| Norristown to Roma (Texas) | 1,654.49 mi (2,662.64 km) |
| Norristown to Rome (Georgia) | 675.62 mi (1,087.31 km) |
| Norristown to Rome (New York) | 214.57 mi (345.32 km) |
