| Ganderkesee to Oestrich-Winkel | 211.07 mi (339.69 km) |
| Ganderkesee to Offenburg | 316.83 mi (509.89 km) |
| Ganderkesee to Oftersheim | 253.25 mi (407.56 km) |
| Ganderkesee to Ohrdruf | 178.67 mi (287.54 km) |
| Ganderkesee to Ohringen | 268.22 mi (431.65 km) |
| Ganderkesee to Olbernhau | 261.63 mi (421.05 km) |
| Ganderkesee to Olching | 355.41 mi (571.98 km) |
| Ganderkesee to Oldenburg | 15.76 mi (25.36 km) |
| Ganderkesee to Oldenburg in Holstein | 129.47 mi (208.36 km) |
| Ganderkesee to Olfen | 103.54 mi (166.63 km) |
| Ganderkesee to Olpe | 142.78 mi (229.78 km) |
| Ganderkesee to Olsberg | 116.51 mi (187.50 km) |
| Ganderkesee to Oranienburg | 196.36 mi (316.01 km) |
| Ganderkesee to Ortenberg | 186.44 mi (300.04 km) |
| Ganderkesee to Oschatz | 227.32 mi (365.84 km) |
