| Drogheda to Rockville (Maryland) | 3,368.82 mi (5,421.59 km) |
| Drogheda to Rockville Centre (New York) | 3,156.53 mi (5,079.94 km) |
| Drogheda to Rockwall (Texas) | 4,426.66 mi (7,124.01 km) |
| Drogheda to Rocky Mount (North Carolina) | 3,541.61 mi (5,699.68 km) |
| Drogheda to Rocky Point (New York) | 3,116.37 mi (5,015.31 km) |
| Drogheda to Rocky River (Ohio) | 3,444.04 mi (5,542.65 km) |
| Drogheda to Roessleville (New York) | 3,073.46 mi (4,946.26 km) |
| Drogheda to Rogers (Arkansas) | 4,165.20 mi (6,703.25 km) |
| Drogheda to Rogers (Minnesota) | 3,710.24 mi (5,971.06 km) |
| Drogheda to Rohnert Park (California) | 5,036.40 mi (8,105.30 km) |
| Drogheda to Rolla (Missouri) | 3,992.85 mi (6,425.86 km) |
| Drogheda to Rolling Meadows (Illinois) | 3,652.22 mi (5,877.68 km) |
| Drogheda to Roma (Texas) | 4,869.91 mi (7,837.37 km) |
| Drogheda to Rome (Georgia) | 3,919.74 mi (6,308.21 km) |
| Drogheda to Rome (New York) | 3,117.45 mi (5,017.05 km) |
