| Killingworth to Opole | 863.84 mi (1,390.22 km) |
| Killingworth to Orzesze | 912.54 mi (1,468.59 km) |
| Killingworth to Osowa | 797.35 mi (1,283.21 km) |
| Killingworth to Ostroda | 867.75 mi (1,396.51 km) |
| Killingworth to Ostroleka | 943.26 mi (1,518.03 km) |
| Killingworth to Ostrow Mazowiecka | 962.17 mi (1,548.46 km) |
| Killingworth to Ostrow Wielkopolski | 829.55 mi (1,335.03 km) |
| Killingworth to Ostrowiec Swietokrzyski | 990.87 mi (1,594.66 km) |
| Killingworth to Ostrzeszow | 840.77 mi (1,353.09 km) |
| Killingworth to Oswiecim | 934.53 mi (1,503.98 km) |
| Killingworth to Otwock | 953.16 mi (1,533.96 km) |
| Killingworth to Ozarow Mazowiecki | 932.22 mi (1,500.26 km) |
| Killingworth to Ozimek | 874.47 mi (1,407.32 km) |
| Killingworth to Ozorkow | 878.64 mi (1,414.04 km) |
| Killingworth to Pabianice | 891.05 mi (1,434.01 km) |
