| Halstead to Opole | 750.33 mi (1,207.53 km) |
| Halstead to Orzesze | 794.18 mi (1,278.11 km) |
| Halstead to Osowa | 755.62 mi (1,216.05 km) |
| Halstead to Ostroda | 813.34 mi (1,308.95 km) |
| Halstead to Ostroleka | 880.28 mi (1,416.68 km) |
| Halstead to Ostrow Mazowiecka | 895.43 mi (1,441.05 km) |
| Halstead to Ostrow Wielkopolski | 732.49 mi (1,178.82 km) |
| Halstead to Ostrowiec Swietokrzyski | 893.73 mi (1,438.33 km) |
| Halstead to Ostrzeszow | 739.96 mi (1,190.85 km) |
| Halstead to Oswiecim | 816.40 mi (1,313.87 km) |
| Halstead to Otwock | 873.89 mi (1,406.39 km) |
| Halstead to Ozarow Mazowiecki | 853.41 mi (1,373.44 km) |
| Halstead to Ozimek | 762.14 mi (1,226.55 km) |
| Halstead to Ozorkow | 791.61 mi (1,273.97 km) |
| Halstead to Pabianice | 798.90 mi (1,285.71 km) |
