| Mariehamn to Civita Castellana | 1,270.58 mi (2,044.81 km) |
| Mariehamn to Civitanova Marche | 1,189.49 mi (1,914.29 km) |
| Mariehamn to Civitavecchia | 1,290.49 mi (2,076.84 km) |
| Mariehamn to Civitella in Val di Chiana | 1,202.90 mi (1,935.88 km) |
| Mariehamn to Clusone | 1,063.68 mi (1,711.82 km) |
| Mariehamn to Coccaglio | 1,084.17 mi (1,744.80 km) |
| Mariehamn to Codigoro | 1,103.13 mi (1,775.32 km) |
| Mariehamn to Codogno | 1,114.81 mi (1,794.11 km) |
| Mariehamn to Codroipo | 1,017.30 mi (1,637.19 km) |
| Mariehamn to Cogoleto | 1,182.05 mi (1,902.33 km) |
| Mariehamn to Colle di Val d'Elsa | 1,211.21 mi (1,949.26 km) |
| Mariehamn to Colle Salvetti | 1,206.45 mi (1,941.59 km) |
| Mariehamn to Collecchio | 1,134.05 mi (1,825.08 km) |
| Mariehamn to Colleferro | 1,302.60 mi (2,096.33 km) |
| Mariehamn to Collegno | 1,156.04 mi (1,860.46 km) |
