| Cities | Distance |
|---|---|
| Romanshorn to Popovo | 866.08 mi (1,393.81 km) |
| Romanshorn to Provadia | 925.55 mi (1,489.53 km) |
| Romanshorn to Radnevo | 886.34 mi (1,426.43 km) |
| Romanshorn to Radomir | 747.01 mi (1,202.20 km) |
| Romanshorn to Rakitovo | 816.93 mi (1,314.72 km) |
| Romanshorn to Rakovski | 844.08 mi (1,358.41 km) |
| Romanshorn to Razgrad | 873.60 mi (1,405.93 km) |
| Romanshorn to Razlog | 794.42 mi (1,278.50 km) |
| Romanshorn to Ruse | 839.75 mi (1,351.44 km) |
| Romanshorn to Samokov | 780.96 mi (1,256.84 km) |
| Romanshorn to Sandanski | 799.18 mi (1,286.16 km) |
| Romanshorn to Sevlievo | 825.67 mi (1,328.78 km) |
| Romanshorn to Shumen | 899.84 mi (1,448.16 km) |
| Romanshorn to Silistra | 891.83 mi (1,435.26 km) |
| Romanshorn to Sliven | 891.34 mi (1,434.48 km) |