| South Portland to Cavdir | 4,942.53 mi (7,954.23 km) |
| South Portland to Cay | 4,931.42 mi (7,936.36 km) |
| South Portland to Caybasi | 5,054.39 mi (8,134.25 km) |
| South Portland to Caycuma | 4,843.62 mi (7,795.06 km) |
| South Portland to Cayeli | 5,185.87 mi (8,345.85 km) |
| South Portland to Cayiralan | 5,081.17 mi (8,177.36 km) |
| South Portland to Cayirhan | 4,888.73 mi (7,867.66 km) |
| South Portland to Cayirli | 5,223.86 mi (8,406.99 km) |
| South Portland to Cayirova | 4,764.05 mi (7,666.99 km) |
| South Portland to Caykara | 5,185.06 mi (8,344.54 km) |
| South Portland to Cekerek | 5,038.96 mi (8,109.42 km) |
| South Portland to Cekme | 4,746.86 mi (7,639.34 km) |
| South Portland to Celtik | 4,942.33 mi (7,953.91 km) |
| South Portland to Cerkes | 4,903.45 mi (7,891.34 km) |
| South Portland to Cerkezkoy | 4,688.80 mi (7,545.90 km) |
