| Zalec to Opole | 330.37 mi (531.68 km) |
| Zalec to Orzesze | 315.90 mi (508.39 km) |
| Zalec to Osowa | 583.27 mi (938.68 km) |
| Zalec to Ostroda | 556.85 mi (896.17 km) |
| Zalec to Ostroleka | 550.66 mi (886.20 km) |
| Zalec to Ostrow Mazowiecka | 543.55 mi (874.76 km) |
| Zalec to Ostrow Wielkopolski | 391.86 mi (630.64 km) |
| Zalec to Ostrowiec Swietokrzyski | 430.83 mi (693.35 km) |
| Zalec to Ostrzeszow | 378.42 mi (609.00 km) |
| Zalec to Oswiecim | 321.55 mi (517.48 km) |
| Zalec to Otwock | 489.74 mi (788.15 km) |
| Zalec to Ozarow Mazowiecki | 483.98 mi (778.89 km) |
| Zalec to Ozimek | 335.89 mi (540.56 km) |
| Zalec to Ozorkow | 436.49 mi (702.46 km) |
| Zalec to Pabianice | 419.12 mi (674.52 km) |
