| Montabaur to Orzesze | 482.17 mi (775.98 km) |
| Montabaur to Osowa | 525.57 mi (845.82 km) |
| Montabaur to Ostroda | 561.84 mi (904.20 km) |
| Montabaur to Ostroleka | 614.06 mi (988.23 km) |
| Montabaur to Ostrow Mazowiecka | 624.31 mi (1,004.73 km) |
| Montabaur to Ostrow Wielkopolski | 441.64 mi (710.74 km) |
| Montabaur to Ostrowiec Swietokrzyski | 594.37 mi (956.54 km) |
| Montabaur to Ostrzeszow | 444.98 mi (716.13 km) |
| Montabaur to Oswiecim | 503.86 mi (810.88 km) |
| Montabaur to Otwock | 591.50 mi (951.92 km) |
| Montabaur to Ozarow Mazowiecki | 572.65 mi (921.59 km) |
| Montabaur to Ozimek | 455.89 mi (733.68 km) |
| Montabaur to Ozorkow | 506.58 mi (815.25 km) |
| Montabaur to Pabianice | 508.45 mi (818.27 km) |
| Montabaur to Parczew | 657.52 mi (1,058.17 km) |
