| Romanshorn to Sulakyurt | 1,310.07 mi (2,108.35 km) |
| Romanshorn to Sultanbeyli | 1,081.08 mi (1,739.83 km) |
| Romanshorn to Sultandagi | 1,262.28 mi (2,031.44 km) |
| Romanshorn to Sultanhani | 1,375.05 mi (2,212.93 km) |
| Romanshorn to Sultanhisar | 1,160.12 mi (1,867.04 km) |
| Romanshorn to Suluova | 1,374.98 mi (2,212.82 km) |
| Romanshorn to Sumbas | 1,517.59 mi (2,442.32 km) |
| Romanshorn to Sungurlu | 1,339.83 mi (2,156.24 km) |
| Romanshorn to Surmene | 1,578.48 mi (2,540.32 km) |
| Romanshorn to Suruc | 1,643.37 mi (2,644.75 km) |
| Romanshorn to Susehri | 1,509.67 mi (2,429.57 km) |
| Romanshorn to Susurluk | 1,073.21 mi (1,727.17 km) |
| Romanshorn to Susuz | 1,723.23 mi (2,773.27 km) |
| Romanshorn to Sutculer | 1,295.69 mi (2,085.21 km) |
| Romanshorn to Talas | 1,447.94 mi (2,330.23 km) |
