| Killarney to Rockville (Maryland) | 3,265.19 mi (5,254.82 km) |
| Killarney to Rockville Centre (New York) | 3,051.19 mi (4,910.41 km) |
| Killarney to Rockwall (Texas) | 4,343.03 mi (6,989.43 km) |
| Killarney to Rocky Mount (North Carolina) | 3,431.69 mi (5,522.77 km) |
| Killarney to Rocky Point (New York) | 3,010.62 mi (4,845.12 km) |
| Killarney to Rocky River (Ohio) | 3,354.37 mi (5,398.34 km) |
| Killarney to Roessleville (New York) | 2,974.02 mi (4,786.22 km) |
| Killarney to Rogers (Arkansas) | 4,084.51 mi (6,573.39 km) |
| Killarney to Rogers (Minnesota) | 3,649.97 mi (5,874.05 km) |
| Killarney to Rohnert Park (California) | 5,014.58 mi (8,070.19 km) |
| Killarney to Rolla (Missouri) | 3,911.51 mi (6,294.97 km) |
| Killarney to Rolling Meadows (Illinois) | 3,574.45 mi (5,752.53 km) |
| Killarney to Roma (Texas) | 4,778.84 mi (7,690.79 km) |
| Killarney to Rome (Georgia) | 3,818.72 mi (6,145.64 km) |
| Killarney to Rome (New York) | 3,022.25 mi (4,863.85 km) |
