| Romanshorn to Nowy Dwor Mazowiecki | 605.39 mi (974.27 km) |
| Romanshorn to Nowy Sacz | 536.86 mi (863.99 km) |
| Romanshorn to Nowy Targ | 504.83 mi (812.45 km) |
| Romanshorn to Nowy Tomysl | 445.35 mi (716.72 km) |
| Romanshorn to Nysa | 413.26 mi (665.07 km) |
| Romanshorn to Oborniki | 482.01 mi (775.72 km) |
| Romanshorn to Oborniki Slaskie | 425.74 mi (685.16 km) |
| Romanshorn to Olawa | 426.93 mi (687.08 km) |
| Romanshorn to Olecko | 725.60 mi (1,167.74 km) |
| Romanshorn to Olesnica | 439.49 mi (707.28 km) |
| Romanshorn to Olesno | 468.09 mi (753.31 km) |
| Romanshorn to Olkusz | 499.54 mi (803.94 km) |
| Romanshorn to Olsztyn | 647.97 mi (1,042.81 km) |
| Romanshorn to Opalenica | 453.41 mi (729.70 km) |
| Romanshorn to Opoczno | 556.25 mi (895.20 km) |
