| Cloppenburg to Oestrich-Winkel | 196.93 mi (316.92 km) |
| Cloppenburg to Offenburg | 302.90 mi (487.47 km) |
| Cloppenburg to Oftersheim | 241.52 mi (388.69 km) |
| Cloppenburg to Ohrdruf | 180.62 mi (290.68 km) |
| Cloppenburg to Ohringen | 259.93 mi (418.32 km) |
| Cloppenburg to Olbernhau | 271.57 mi (437.06 km) |
| Cloppenburg to Olching | 351.78 mi (566.13 km) |
| Cloppenburg to Oldenburg | 21.42 mi (34.47 km) |
| Cloppenburg to Oldenburg in Holstein | 153.43 mi (246.93 km) |
| Cloppenburg to Olfen | 83.22 mi (133.93 km) |
| Cloppenburg to Olpe | 127.00 mi (204.39 km) |
| Cloppenburg to Olsberg | 105.26 mi (169.40 km) |
| Cloppenburg to Oranienburg | 216.72 mi (348.78 km) |
| Cloppenburg to Ortenberg | 177.65 mi (285.89 km) |
| Cloppenburg to Oschatz | 239.90 mi (386.08 km) |
