| Locarno to Octeville | 538.99 mi (867.42 km) |
| Locarno to Oignies | 399.19 mi (642.43 km) |
| Locarno to Oissel | 419.64 mi (675.34 km) |
| Locarno to Olivet | 345.38 mi (555.83 km) |
| Locarno to Ollioules | 254.55 mi (409.66 km) |
| Locarno to Olonne-sur-Mer | 504.49 mi (811.90 km) |
| Locarno to Oloron-Sainte-Marie | 505.29 mi (813.19 km) |
| Locarno to Onet Village | 326.34 mi (525.20 km) |
| Locarno to Onnaing | 377.00 mi (606.73 km) |
| Locarno to Orange | 239.63 mi (385.64 km) |
| Locarno to Orchies | 391.89 mi (630.69 km) |
| Locarno to Orleans | 345.81 mi (556.52 km) |
| Locarno to Orly | 348.12 mi (560.25 km) |
| Locarno to Ormesson-sur-Marne | 343.72 mi (553.16 km) |
| Locarno to Orsay | 354.94 mi (571.22 km) |
