| Mariehamn to Busto Garolfo | 1,102.77 mi (1,774.74 km) |
| Mariehamn to Cabras | 1,477.55 mi (2,377.88 km) |
| Mariehamn to Cadelbosco di Sopra | 1,127.44 mi (1,814.44 km) |
| Mariehamn to Cadoneghe | 1,064.18 mi (1,712.64 km) |
| Mariehamn to Cagli | 1,183.33 mi (1,904.39 km) |
| Mariehamn to Cagliari | 1,516.61 mi (2,440.74 km) |
| Mariehamn to Cairo Montenotte | 1,187.66 mi (1,911.36 km) |
| Mariehamn to Caivano | 1,344.91 mi (2,164.42 km) |
| Mariehamn to Calcinaia | 1,199.09 mi (1,929.76 km) |
| Mariehamn to Calcinato | 1,084.49 mi (1,745.32 km) |
| Mariehamn to Calderara di Reno | 1,131.64 mi (1,821.20 km) |
| Mariehamn to Caldogno | 1,059.91 mi (1,705.77 km) |
| Mariehamn to Calenzano | 1,179.61 mi (1,898.40 km) |
| Mariehamn to Calolziocorte | 1,077.36 mi (1,733.84 km) |
| Mariehamn to Caltagirone | 1,597.63 mi (2,571.14 km) |
