| Wattwil to Octeville | 516.63 mi (831.43 km) |
| Wattwil to Oignies | 352.83 mi (567.83 km) |
| Wattwil to Oissel | 393.22 mi (632.82 km) |
| Wattwil to Olivet | 336.92 mi (542.23 km) |
| Wattwil to Ollioules | 327.46 mi (526.99 km) |
| Wattwil to Olonne-sur-Mer | 514.60 mi (828.17 km) |
| Wattwil to Oloron-Sainte-Marie | 549.41 mi (884.19 km) |
| Wattwil to Onet Village | 372.09 mi (598.82 km) |
| Wattwil to Onnaing | 328.25 mi (528.27 km) |
| Wattwil to Orange | 300.06 mi (482.90 km) |
| Wattwil to Orchies | 344.23 mi (553.98 km) |
| Wattwil to Orleans | 336.73 mi (541.92 km) |
| Wattwil to Orly | 324.84 mi (522.79 km) |
| Wattwil to Ormesson-sur-Marne | 319.26 mi (513.80 km) |
| Wattwil to Orsay | 333.08 mi (536.04 km) |
