| Castenaso to Oerlinghausen | 531.03 mi (854.61 km) |
| Castenaso to Oestrich-Winkel | 412.67 mi (664.13 km) |
| Castenaso to Offenburg | 320.95 mi (516.52 km) |
| Castenaso to Oftersheim | 362.33 mi (583.11 km) |
| Castenaso to Ohrdruf | 437.90 mi (704.73 km) |
| Castenaso to Ohringen | 337.15 mi (542.59 km) |
| Castenaso to Olbernhau | 434.13 mi (698.67 km) |
| Castenaso to Olching | 255.08 mi (410.51 km) |
| Castenaso to Oldenburg | 614.51 mi (988.96 km) |
| Castenaso to Oldenburg in Holstein | 676.95 mi (1,089.45 km) |
| Castenaso to Olfen | 532.24 mi (856.56 km) |
| Castenaso to Olpe | 480.13 mi (772.69 km) |
| Castenaso to Olsberg | 492.33 mi (792.32 km) |
| Castenaso to Oranienburg | 575.29 mi (925.84 km) |
| Castenaso to Ortenberg | 419.34 mi (674.87 km) |
