| Mariehamn to Cankova | 938.06 mi (1,509.67 km) |
| Mariehamn to Celje | 976.62 mi (1,571.72 km) |
| Mariehamn to Cerklje na Gorenjskem | 982.44 mi (1,581.09 km) |
| Mariehamn to Cerknica | 1,014.29 mi (1,632.34 km) |
| Mariehamn to Cerkno | 995.33 mi (1,601.82 km) |
| Mariehamn to Cerkvenjak | 949.06 mi (1,527.37 km) |
| Mariehamn to Cirkulane | 963.92 mi (1,551.27 km) |
| Mariehamn to Crensovci | 946.14 mi (1,522.66 km) |
| Mariehamn to Crna na Koroskem | 964.19 mi (1,551.72 km) |
| Mariehamn to Crnomelj | 1,022.55 mi (1,645.63 km) |
| Mariehamn to Destrnik | 954.54 mi (1,536.18 km) |
| Mariehamn to Divaca | 1,025.72 mi (1,650.74 km) |
| Mariehamn to Dobje | 982.37 mi (1,580.97 km) |
| Mariehamn to Dobrna | 969.96 mi (1,561.00 km) |
| Mariehamn to Dobrova | 996.35 mi (1,603.47 km) |
