| Sidcup to Opole | 774.40 mi (1,246.27 km) |
| Sidcup to Orzesze | 817.04 mi (1,314.90 km) |
| Sidcup to Osowa | 790.13 mi (1,271.59 km) |
| Sidcup to Ostroda | 846.05 mi (1,361.59 km) |
| Sidcup to Ostroleka | 911.57 mi (1,467.03 km) |
| Sidcup to Ostrow Mazowiecka | 926.14 mi (1,490.47 km) |
| Sidcup to Ostrow Wielkopolski | 759.56 mi (1,222.40 km) |
| Sidcup to Ostrowiec Swietokrzyski | 919.84 mi (1,480.34 km) |
| Sidcup to Ostrzeszow | 766.36 mi (1,233.33 km) |
| Sidcup to Oswiecim | 839.17 mi (1,350.52 km) |
| Sidcup to Otwock | 902.92 mi (1,453.11 km) |
| Sidcup to Ozarow Mazowiecki | 882.61 mi (1,420.43 km) |
| Sidcup to Ozimek | 786.35 mi (1,265.50 km) |
| Sidcup to Ozorkow | 819.90 mi (1,319.50 km) |
| Sidcup to Pabianice | 826.34 mi (1,329.87 km) |
