| Saint-Louis to Novi di Modena | 245.00 mi (394.30 km) |
| Saint-Louis to Novi Ligure | 204.05 mi (328.38 km) |
| Saint-Louis to Nuoro | 510.09 mi (820.92 km) |
| Saint-Louis to Occhiobello | 265.85 mi (427.85 km) |
| Saint-Louis to Oderzo | 264.64 mi (425.89 km) |
| Saint-Louis to Oggiono | 150.66 mi (242.46 km) |
| Saint-Louis to Olbia | 470.83 mi (757.72 km) |
| Saint-Louis to Oleggio | 146.47 mi (235.71 km) |
| Saint-Louis to Olgiate Comasco | 141.29 mi (227.39 km) |
| Saint-Louis to Olgiate Olona | 148.87 mi (239.58 km) |
| Saint-Louis to Omegna | 124.74 mi (200.75 km) |
| Saint-Louis to Opera | 171.41 mi (275.85 km) |
| Saint-Louis to Oppeano | 233.68 mi (376.07 km) |
| Saint-Louis to Orbassano | 178.45 mi (287.19 km) |
| Saint-Louis to Orbetello | 397.75 mi (640.12 km) |
