| Allen Park to Cortona | 4,536.58 mi (7,300.91 km) |
| Allen Park to Cosenza | 4,879.49 mi (7,852.78 km) |
| Allen Park to Cossato | 4,291.51 mi (6,906.52 km) |
| Allen Park to Costa Volpino | 4,359.09 mi (7,015.28 km) |
| Allen Park to Creazzo | 4,425.80 mi (7,122.64 km) |
| Allen Park to Crema | 4,360.37 mi (7,017.34 km) |
| Allen Park to Cremona | 4,383.52 mi (7,054.59 km) |
| Allen Park to Crevalcore | 4,444.82 mi (7,153.24 km) |
| Allen Park to Crispiano | 4,862.82 mi (7,825.95 km) |
| Allen Park to Crosia | 4,889.11 mi (7,868.27 km) |
| Allen Park to Crotone | 4,924.82 mi (7,925.73 km) |
| Allen Park to Cuneo | 4,311.16 mi (6,938.15 km) |
| Allen Park to Cuorgne | 4,277.20 mi (6,883.49 km) |
| Allen Park to Cusano Milanino | 4,333.19 mi (6,973.60 km) |
| Allen Park to Cutro | 4,921.51 mi (7,920.41 km) |
