| Mariehamn to Bombarral | 1,909.14 mi (3,072.46 km) |
| Mariehamn to Bougado | 1,771.61 mi (2,851.13 km) |
| Mariehamn to Braga | 1,755.34 mi (2,824.95 km) |
| Mariehamn to Braganca | 1,693.71 mi (2,725.76 km) |
| Mariehamn to Cabeceiras de Basto | 1,744.86 mi (2,808.08 km) |
| Mariehamn to Cacem | 1,942.78 mi (3,126.60 km) |
| Mariehamn to Cadaval | 1,909.64 mi (3,073.27 km) |
| Mariehamn to Caldas da Rainha | 1,900.40 mi (3,058.40 km) |
| Mariehamn to Calheta | 2,526.67 mi (4,066.28 km) |
| Mariehamn to Camara de Lobos | 2,522.99 mi (4,060.36 km) |
| Mariehamn to Canico | 2,522.49 mi (4,059.55 km) |
| Mariehamn to Cantanhede | 1,830.15 mi (2,945.34 km) |
| Mariehamn to Carregal do Sal | 1,808.43 mi (2,910.39 km) |
| Mariehamn to Cartaxo | 1,905.75 mi (3,067.01 km) |
| Mariehamn to Cascais | 1,949.97 mi (3,138.17 km) |
