| Castelginest to Oestrich-Winkel | 534.50 mi (860.19 km) |
| Castelginest to Offenburg | 453.36 mi (729.60 km) |
| Castelginest to Oftersheim | 518.58 mi (834.58 km) |
| Castelginest to Ohrdruf | 657.14 mi (1,057.56 km) |
| Castelginest to Ohringen | 540.03 mi (869.09 km) |
| Castelginest to Olbernhau | 736.30 mi (1,184.95 km) |
| Castelginest to Olching | 567.14 mi (912.72 km) |
| Castelginest to Oldenburg | 722.44 mi (1,162.65 km) |
| Castelginest to Oldenburg in Holstein | 847.19 mi (1,363.42 km) |
| Castelginest to Olfen | 619.05 mi (996.27 km) |
| Castelginest to Olpe | 587.50 mi (945.50 km) |
| Castelginest to Olsberg | 622.30 mi (1,001.50 km) |
| Castelginest to Oranienburg | 826.83 mi (1,330.66 km) |
| Castelginest to Ortenberg | 583.12 mi (938.45 km) |
| Castelginest to Oschatz | 755.43 mi (1,215.74 km) |
