| Romanshorn to Coswig | 328.52 mi (528.70 km) |
| Romanshorn to Cottbus | 365.41 mi (588.07 km) |
| Romanshorn to Crailsheim | 113.40 mi (182.51 km) |
| Romanshorn to Cremlingen | 328.83 mi (529.19 km) |
| Romanshorn to Crimmitschau | 263.20 mi (423.57 km) |
| Romanshorn to Cuxhaven | 436.08 mi (701.80 km) |
| Romanshorn to Dachau | 107.59 mi (173.15 km) |
| Romanshorn to Dallgow-Doberitz | 380.34 mi (612.10 km) |
| Romanshorn to Damme | 346.34 mi (557.37 km) |
| Romanshorn to Darmstadt | 162.71 mi (261.85 km) |
| Romanshorn to Dassel | 293.32 mi (472.05 km) |
| Romanshorn to Datteln | 296.63 mi (477.39 km) |
| Romanshorn to Dautphe | 230.54 mi (371.01 km) |
| Romanshorn to Deggendorf | 187.97 mi (302.51 km) |
| Romanshorn to Delbruck | 292.55 mi (470.81 km) |
