| Gernsbach to Octeville | 454.08 mi (730.77 km) |
| Gernsbach to Oignies | 266.47 mi (428.84 km) |
| Gernsbach to Oissel | 330.26 mi (531.50 km) |
| Gernsbach to Olivet | 301.99 mi (486.01 km) |
| Gernsbach to Ollioules | 406.47 mi (654.15 km) |
| Gernsbach to Olonne-sur-Mer | 494.52 mi (795.85 km) |
| Gernsbach to Oloron-Sainte-Marie | 575.80 mi (926.67 km) |
| Gernsbach to Onet Village | 408.05 mi (656.69 km) |
| Gernsbach to Onnaing | 239.99 mi (386.22 km) |
| Gernsbach to Orange | 360.83 mi (580.69 km) |
| Gernsbach to Orchies | 256.62 mi (413.00 km) |
| Gernsbach to Orleans | 300.97 mi (484.36 km) |
| Gernsbach to Orly | 270.58 mi (435.46 km) |
| Gernsbach to Ormesson-sur-Marne | 263.85 mi (424.63 km) |
| Gernsbach to Orsay | 280.09 mi (450.76 km) |
