| Killarney to Orzesze | 1,225.13 mi (1,971.65 km) |
| Killarney to Osowa | 1,160.45 mi (1,867.56 km) |
| Killarney to Ostroda | 1,225.30 mi (1,971.93 km) |
| Killarney to Ostroleka | 1,296.74 mi (2,086.90 km) |
| Killarney to Ostrow Mazowiecka | 1,313.59 mi (2,114.02 km) |
| Killarney to Ostrow Wielkopolski | 1,159.53 mi (1,866.08 km) |
| Killarney to Ostrowiec Swietokrzyski | 1,321.69 mi (2,127.05 km) |
| Killarney to Ostrzeszow | 1,167.93 mi (1,879.61 km) |
| Killarney to Oswiecim | 1,247.37 mi (2,007.45 km) |
| Killarney to Otwock | 1,296.64 mi (2,086.74 km) |
| Killarney to Ozarow Mazowiecki | 1,275.87 mi (2,053.31 km) |
| Killarney to Ozimek | 1,192.31 mi (1,918.84 km) |
| Killarney to Ozorkow | 1,216.30 mi (1,957.44 km) |
| Killarney to Pabianice | 1,225.11 mi (1,971.62 km) |
| Killarney to Parczew | 1,370.67 mi (2,205.89 km) |
