| Weil am Rhein to Oria | 697.51 mi (1,122.54 km) |
| Weil am Rhein to Oristano | 533.49 mi (858.57 km) |
| Weil am Rhein to Orta Nova | 588.33 mi (946.82 km) |
| Weil am Rhein to Orte | 424.34 mi (682.91 km) |
| Weil am Rhein to Ortona | 490.99 mi (790.17 km) |
| Weil am Rhein to Orvieto | 401.81 mi (646.65 km) |
| Weil am Rhein to Orzinuovi | 187.59 mi (301.90 km) |
| Weil am Rhein to Osimo | 401.60 mi (646.32 km) |
| Weil am Rhein to Ospitaletto | 183.10 mi (294.68 km) |
| Weil am Rhein to Ostuni | 683.84 mi (1,100.54 km) |
| Weil am Rhein to Ottaviano | 576.36 mi (927.56 km) |
| Weil am Rhein to Ovada | 210.14 mi (338.18 km) |
| Weil am Rhein to Ozieri | 489.21 mi (787.31 km) |
| Weil am Rhein to Paceco | 709.35 mi (1,141.60 km) |
| Weil am Rhein to Pachino | 842.86 mi (1,356.46 km) |
