| Killarney to Joliet (Illinois) | 3,604.09 mi (5,800.22 km) |
| Killarney to Jonesboro (Arkansas) | 3,969.24 mi (6,387.87 km) |
| Killarney to Joplin (Missouri) | 4,061.66 mi (6,536.61 km) |
| Killarney to Joppatowne (Maryland) | 3,217.23 mi (5,177.63 km) |
| Killarney to Juana Díaz (Puerto Rico) | 3,851.92 mi (6,199.07 km) |
| Killarney to Junction City (Kansas) | 4,059.38 mi (6,532.94 km) |
| Killarney to Juneau (Alaska) | 4,195.10 mi (6,751.36 km) |
| Killarney to Jupiter (Florida) | 3,964.39 mi (6,380.07 km) |
| Killarney to Jupiter Farms (Florida) | 3,968.78 mi (6,387.14 km) |
| Killarney to Jurupa Valley (California) | 5,079.21 mi (8,174.20 km) |
| Killarney to Justice (Illinois) | 3,581.36 mi (5,763.65 km) |
| Killarney to Kahului (Hawaii) | 7,017.92 mi (11,294.26 km) |
| Killarney to Kailua (Hawaii) | 7,011.78 mi (11,284.37 km) |
| Killarney to Kalamazoo (Michigan) | 3,469.32 mi (5,583.33 km) |
| Killarney to Kalispell (Montana) | 4,221.71 mi (6,794.18 km) |
