| Casier to Oerlinghausen | 466.55 mi (750.85 km) |
| Casier to Oestrich-Winkel | 360.59 mi (580.31 km) |
| Casier to Offenburg | 282.97 mi (455.40 km) |
| Casier to Oftersheim | 309.99 mi (498.88 km) |
| Casier to Ohrdruf | 364.95 mi (587.32 km) |
| Casier to Ohringen | 277.97 mi (447.35 km) |
| Casier to Olbernhau | 349.87 mi (563.06 km) |
| Casier to Olching | 182.19 mi (293.21 km) |
| Casier to Oldenburg | 549.18 mi (883.82 km) |
| Casier to Oldenburg in Holstein | 600.93 mi (967.10 km) |
| Casier to Olfen | 475.14 mi (764.66 km) |
| Casier to Olpe | 423.59 mi (681.70 km) |
| Casier to Olsberg | 430.71 mi (693.16 km) |
| Casier to Oranienburg | 492.67 mi (792.88 km) |
| Casier to Ortenberg | 357.99 mi (576.12 km) |
