| Boppard to Orzesze | 493.21 mi (793.74 km) |
| Boppard to Osowa | 542.33 mi (872.80 km) |
| Boppard to Ostroda | 577.79 mi (929.86 km) |
| Boppard to Ostroleka | 629.16 mi (1,012.54 km) |
| Boppard to Ostrow Mazowiecka | 639.11 mi (1,028.54 km) |
| Boppard to Ostrow Wielkopolski | 455.44 mi (732.96 km) |
| Boppard to Ostrowiec Swietokrzyski | 606.88 mi (976.68 km) |
| Boppard to Ostrzeszow | 458.38 mi (737.69 km) |
| Boppard to Oswiecim | 514.74 mi (828.40 km) |
| Boppard to Otwock | 605.59 mi (974.60 km) |
| Boppard to Ozarow Mazowiecki | 586.90 mi (944.53 km) |
| Boppard to Ozimek | 467.90 mi (753.01 km) |
| Boppard to Ozorkow | 520.68 mi (837.95 km) |
| Boppard to Pabianice | 522.08 mi (840.20 km) |
| Boppard to Parczew | 670.94 mi (1,079.77 km) |
