| Baldock to Opole | 785.69 mi (1,264.44 km) |
| Baldock to Orzesze | 829.63 mi (1,335.16 km) |
| Baldock to Osowa | 787.83 mi (1,267.89 km) |
| Baldock to Ostroda | 846.48 mi (1,362.27 km) |
| Baldock to Ostroleka | 914.00 mi (1,470.94 km) |
| Baldock to Ostrow Mazowiecka | 929.36 mi (1,495.65 km) |
| Baldock to Ostrow Wielkopolski | 767.43 mi (1,235.06 km) |
| Baldock to Ostrowiec Swietokrzyski | 928.82 mi (1,494.79 km) |
| Baldock to Ostrzeszow | 775.02 mi (1,247.28 km) |
| Baldock to Oswiecim | 851.86 mi (1,370.93 km) |
| Baldock to Otwock | 908.35 mi (1,461.85 km) |
| Baldock to Ozarow Mazowiecki | 887.83 mi (1,428.83 km) |
| Baldock to Ozimek | 797.49 mi (1,283.43 km) |
| Baldock to Ozorkow | 826.27 mi (1,329.76 km) |
| Baldock to Pabianice | 833.76 mi (1,341.80 km) |
