| Buckhurst Hill to Opole | 776.60 mi (1,249.81 km) |
| Buckhurst Hill to Orzesze | 819.73 mi (1,319.23 km) |
| Buckhurst Hill to Osowa | 787.48 mi (1,267.32 km) |
| Buckhurst Hill to Ostroda | 844.37 mi (1,358.88 km) |
| Buckhurst Hill to Ostroleka | 910.61 mi (1,465.49 km) |
| Buckhurst Hill to Ostrow Mazowiecka | 925.46 mi (1,489.39 km) |
| Buckhurst Hill to Ostrow Wielkopolski | 760.51 mi (1,223.93 km) |
| Buckhurst Hill to Ostrowiec Swietokrzyski | 921.24 mi (1,482.59 km) |
| Buckhurst Hill to Ostrzeszow | 767.60 mi (1,235.33 km) |
| Buckhurst Hill to Oswiecim | 841.90 mi (1,354.91 km) |
| Buckhurst Hill to Otwock | 903.03 mi (1,453.29 km) |
| Buckhurst Hill to Ozarow Mazowiecki | 882.64 mi (1,420.48 km) |
| Buckhurst Hill to Ozimek | 788.50 mi (1,268.97 km) |
| Buckhurst Hill to Ozorkow | 820.33 mi (1,320.20 km) |
| Buckhurst Hill to Pabianice | 827.15 mi (1,331.17 km) |
