| Porvoo to Cesme | 1,525.20 mi (2,454.57 km) |
| Porvoo to Ceyhan | 1,674.93 mi (2,695.53 km) |
| Porvoo to Ceylanpinar | 1,745.78 mi (2,809.56 km) |
| Porvoo to Cicekdagi | 1,484.85 mi (2,389.63 km) |
| Porvoo to Cide | 1,315.46 mi (2,117.03 km) |
| Porvoo to Cifteler | 1,470.17 mi (2,366.01 km) |
| Porvoo to Ciftlik | 1,583.15 mi (2,547.84 km) |
| Porvoo to Ciftlikkoy | 1,372.43 mi (2,208.71 km) |
| Porvoo to Cihanbeyli | 1,534.59 mi (2,469.69 km) |
| Porvoo to Cildir | 1,523.71 mi (2,452.17 km) |
| Porvoo to Cilimli | 1,366.36 mi (2,198.94 km) |
| Porvoo to Cinar | 1,693.76 mi (2,725.84 km) |
| Porvoo to Cinarcik | 1,372.71 mi (2,209.16 km) |
| Porvoo to Cine | 1,577.63 mi (2,538.95 km) |
| Porvoo to Civril | 1,536.76 mi (2,473.18 km) |
