| Romanshorn to Kayapinar | 1,685.61 mi (2,712.73 km) |
| Romanshorn to Kayseri | 1,442.88 mi (2,322.09 km) |
| Romanshorn to Kemalpasa | 1,105.34 mi (1,778.87 km) |
| Romanshorn to Kemer | 1,317.74 mi (2,120.71 km) |
| Romanshorn to Keskin | 1,322.96 mi (2,129.10 km) |
| Romanshorn to Kilimli | 1,179.07 mi (1,897.52 km) |
| Romanshorn to Kilis | 1,595.48 mi (2,567.68 km) |
| Romanshorn to Kinik | 1,074.28 mi (1,728.89 km) |
| Romanshorn to Kirikkale | 1,312.28 mi (2,111.92 km) |
| Romanshorn to Kirkagac | 1,086.13 mi (1,747.95 km) |
| Romanshorn to Kirklareli | 963.31 mi (1,550.29 km) |
| Romanshorn to Kirsehir | 1,367.26 mi (2,200.39 km) |
| Romanshorn to Kizilpinar | 1,012.88 mi (1,630.07 km) |
| Romanshorn to Kiziltepe | 1,732.29 mi (2,787.85 km) |
| Romanshorn to Kocaali | 1,149.08 mi (1,849.27 km) |
