| Mackworth to Opole | 843.78 mi (1,357.93 km) |
| Mackworth to Orzesze | 889.50 mi (1,431.51 km) |
| Mackworth to Osowa | 822.54 mi (1,323.75 km) |
| Mackworth to Ostroda | 885.86 mi (1,425.65 km) |
| Mackworth to Ostroleka | 956.63 mi (1,539.56 km) |
| Mackworth to Ostrow Mazowiecka | 973.31 mi (1,566.39 km) |
| Mackworth to Ostrow Wielkopolski | 820.18 mi (1,319.95 km) |
| Mackworth to Ostrowiec Swietokrzyski | 982.58 mi (1,581.31 km) |
| Mackworth to Ostrzeszow | 829.02 mi (1,334.19 km) |
| Mackworth to Oswiecim | 911.78 mi (1,467.37 km) |
| Mackworth to Otwock | 956.27 mi (1,538.97 km) |
| Mackworth to Ozarow Mazowiecki | 935.48 mi (1,505.52 km) |
| Mackworth to Ozimek | 855.28 mi (1,376.45 km) |
| Mackworth to Ozorkow | 876.21 mi (1,410.12 km) |
| Mackworth to Pabianice | 885.38 mi (1,424.89 km) |
