| Gillingham to Oerlinghausen | 349.89 mi (563.10 km) |
| Gillingham to Oestrich-Winkel | 339.66 mi (546.63 km) |
| Gillingham to Offenburg | 385.10 mi (619.76 km) |
| Gillingham to Oftersheim | 380.15 mi (611.80 km) |
| Gillingham to Ohrdruf | 443.06 mi (713.04 km) |
| Gillingham to Ohringen | 422.59 mi (680.09 km) |
| Gillingham to Olbernhau | 557.03 mi (896.45 km) |
| Gillingham to Olching | 527.59 mi (849.07 km) |
| Gillingham to Oldenburg | 345.90 mi (556.68 km) |
| Gillingham to Oldenburg in Holstein | 475.35 mi (765.01 km) |
| Gillingham to Olfen | 294.37 mi (473.74 km) |
| Gillingham to Olpe | 316.21 mi (508.89 km) |
| Gillingham to Olsberg | 342.06 mi (550.49 km) |
| Gillingham to Oranienburg | 546.33 mi (879.23 km) |
| Gillingham to Ortenberg | 377.39 mi (607.34 km) |
