| Wealdstone to Opole | 792.61 mi (1,275.59 km) |
| Wealdstone to Orzesze | 835.68 mi (1,344.89 km) |
| Wealdstone to Osowa | 803.22 mi (1,292.65 km) |
| Wealdstone to Ostroda | 860.31 mi (1,384.53 km) |
| Wealdstone to Ostroleka | 926.65 mi (1,491.30 km) |
| Wealdstone to Ostrow Mazowiecka | 941.53 mi (1,515.25 km) |
| Wealdstone to Ostrow Wielkopolski | 776.63 mi (1,249.86 km) |
| Wealdstone to Ostrowiec Swietokrzyski | 937.33 mi (1,508.49 km) |
| Wealdstone to Ostrzeszow | 783.70 mi (1,261.24 km) |
| Wealdstone to Oswiecim | 857.84 mi (1,380.56 km) |
| Wealdstone to Otwock | 919.15 mi (1,479.22 km) |
| Wealdstone to Ozarow Mazowiecki | 898.76 mi (1,446.41 km) |
| Wealdstone to Ozimek | 804.52 mi (1,294.75 km) |
| Wealdstone to Ozorkow | 836.45 mi (1,346.14 km) |
| Wealdstone to Pabianice | 843.27 mi (1,357.11 km) |
