| Romanshorn to Oschatz | 308.24 mi (496.06 km) |
| Romanshorn to Oschersleben | 319.04 mi (513.44 km) |
| Romanshorn to Osnabruck | 331.23 mi (533.06 km) |
| Romanshorn to Ostbevern | 316.45 mi (509.28 km) |
| Romanshorn to Osterburg | 376.04 mi (605.17 km) |
| Romanshorn to Ostercappeln | 334.45 mi (538.25 km) |
| Romanshorn to Osterhofen | 186.33 mi (299.87 km) |
| Romanshorn to Osterholz-Scharmbeck | 391.36 mi (629.84 km) |
| Romanshorn to Osternienburg | 315.90 mi (508.39 km) |
| Romanshorn to Osterode | 290.55 mi (467.60 km) |
| Romanshorn to Osterwieck | 310.21 mi (499.24 km) |
| Romanshorn to Ostfildern | 80.97 mi (130.32 km) |
| Romanshorn to Osthofen | 155.40 mi (250.10 km) |
| Romanshorn to Ostrhauderfehn | 391.25 mi (629.66 km) |
| Romanshorn to Ostringen | 118.18 mi (190.20 km) |
