| Cloppenburg to Orzesze | 495.99 mi (798.22 km) |
| Cloppenburg to Osowa | 440.11 mi (708.29 km) |
| Cloppenburg to Ostroda | 495.25 mi (797.02 km) |
| Cloppenburg to Ostroleka | 561.95 mi (904.37 km) |
| Cloppenburg to Ostrow Mazowiecka | 577.35 mi (929.15 km) |
| Cloppenburg to Ostrow Wielkopolski | 421.02 mi (677.56 km) |
| Cloppenburg to Ostrowiec Swietokrzyski | 583.53 mi (939.10 km) |
| Cloppenburg to Ostrzeszow | 430.32 mi (692.54 km) |
| Cloppenburg to Oswiecim | 518.15 mi (833.88 km) |
| Cloppenburg to Otwock | 557.63 mi (897.42 km) |
| Cloppenburg to Ozarow Mazowiecki | 536.95 mi (864.13 km) |
| Cloppenburg to Ozimek | 459.43 mi (739.38 km) |
| Cloppenburg to Ozorkow | 476.89 mi (767.48 km) |
| Cloppenburg to Pabianice | 485.98 mi (782.11 km) |
| Cloppenburg to Parczew | 631.32 mi (1,016.02 km) |
