| Romanshorn to Noventa Vicentina | 188.58 mi (303.50 km) |
| Romanshorn to Novi di Modena | 198.70 mi (319.78 km) |
| Romanshorn to Novi Ligure | 195.67 mi (314.90 km) |
| Romanshorn to Nuoro | 500.71 mi (805.81 km) |
| Romanshorn to Occhiobello | 211.22 mi (339.92 km) |
| Romanshorn to Oderzo | 193.06 mi (310.70 km) |
| Romanshorn to Oggiono | 123.00 mi (197.95 km) |
| Romanshorn to Olbia | 459.30 mi (739.18 km) |
| Romanshorn to Oleggio | 139.94 mi (225.21 km) |
| Romanshorn to Olgiate Comasco | 124.38 mi (200.17 km) |
| Romanshorn to Olgiate Olona | 135.24 mi (217.65 km) |
| Romanshorn to Omegna | 124.83 mi (200.90 km) |
| Romanshorn to Opera | 150.78 mi (242.66 km) |
| Romanshorn to Oppeano | 178.95 mi (287.99 km) |
| Romanshorn to Orbassano | 196.81 mi (316.74 km) |
