| Romanshorn to Montana | 729.13 mi (1,173.42 km) |
| Romanshorn to Nova Zagora | 883.45 mi (1,421.77 km) |
| Romanshorn to Novi Iskar | 755.33 mi (1,215.59 km) |
| Romanshorn to Novi Pazar | 910.04 mi (1,464.56 km) |
| Romanshorn to Omurtag | 881.95 mi (1,419.36 km) |
| Romanshorn to Panagyurishte | 802.32 mi (1,291.21 km) |
| Romanshorn to Parvomay | 861.81 mi (1,386.96 km) |
| Romanshorn to Pavlikeni | 828.15 mi (1,332.78 km) |
| Romanshorn to Pazardzhik | 819.67 mi (1,319.13 km) |
| Romanshorn to Pernik | 748.77 mi (1,205.02 km) |
| Romanshorn to Peshtera | 824.39 mi (1,326.73 km) |
| Romanshorn to Petrich | 803.11 mi (1,292.48 km) |
| Romanshorn to Pleven | 791.52 mi (1,273.84 km) |
| Romanshorn to Plovdiv | 839.62 mi (1,351.24 km) |
| Romanshorn to Pomorie | 952.78 mi (1,533.35 km) |
