| Mariehamn to Catania | 1,575.99 mi (2,536.31 km) |
| Mariehamn to Catanzaro | 1,471.95 mi (2,368.87 km) |
| Mariehamn to Cattolica | 1,154.32 mi (1,857.70 km) |
| Mariehamn to Cava de' Tirreni | 1,359.06 mi (2,187.20 km) |
| Mariehamn to Cavallino | 1,368.93 mi (2,203.07 km) |
| Mariehamn to Cavarzere | 1,083.24 mi (1,743.30 km) |
| Mariehamn to Cave | 1,297.74 mi (2,088.52 km) |
| Mariehamn to Cavriago | 1,132.80 mi (1,823.06 km) |
| Mariehamn to Cavriglia | 1,199.02 mi (1,929.64 km) |
| Mariehamn to Cazzago San Martino | 1,082.23 mi (1,741.69 km) |
| Mariehamn to Ceccano | 1,310.96 mi (2,109.79 km) |
| Mariehamn to Cecina | 1,224.84 mi (1,971.19 km) |
| Mariehamn to Cefalu | 1,546.55 mi (2,488.93 km) |
| Mariehamn to Ceglie Messapico | 1,347.91 mi (2,169.26 km) |
| Mariehamn to Celano | 1,273.59 mi (2,049.64 km) |
