| Welling to Opole | 773.96 mi (1,245.57 km) |
| Welling to Orzesze | 816.69 mi (1,314.33 km) |
| Welling to Osowa | 788.97 mi (1,269.73 km) |
| Welling to Ostroda | 845.03 mi (1,359.95 km) |
| Welling to Ostroleka | 910.65 mi (1,465.56 km) |
| Welling to Ostrow Mazowiecka | 925.27 mi (1,489.07 km) |
| Welling to Ostrow Wielkopolski | 758.93 mi (1,221.38 km) |
| Welling to Ostrowiec Swietokrzyski | 919.28 mi (1,479.44 km) |
| Welling to Ostrzeszow | 765.77 mi (1,232.39 km) |
| Welling to Oswiecim | 838.82 mi (1,349.96 km) |
| Welling to Otwock | 902.16 mi (1,451.89 km) |
| Welling to Ozarow Mazowiecki | 881.84 mi (1,419.19 km) |
| Welling to Ozimek | 785.91 mi (1,264.79 km) |
| Welling to Ozorkow | 819.19 mi (1,318.36 km) |
| Welling to Pabianice | 825.69 mi (1,328.82 km) |
