| Detroit to Cortona | 4,526.99 mi (7,285.49 km) |
| Detroit to Cosenza | 4,869.99 mi (7,837.49 km) |
| Detroit to Cossato | 4,281.91 mi (6,891.06 km) |
| Detroit to Costa Volpino | 4,349.42 mi (6,999.72 km) |
| Detroit to Creazzo | 4,416.11 mi (7,107.05 km) |
| Detroit to Crema | 4,350.74 mi (7,001.84 km) |
| Detroit to Cremona | 4,373.88 mi (7,039.09 km) |
| Detroit to Crevalcore | 4,435.18 mi (7,137.73 km) |
| Detroit to Crispiano | 4,853.22 mi (7,810.50 km) |
| Detroit to Crosia | 4,879.58 mi (7,852.92 km) |
| Detroit to Crotone | 4,915.30 mi (7,910.41 km) |
| Detroit to Cuneo | 4,301.64 mi (6,922.83 km) |
| Detroit to Cuorgne | 4,267.62 mi (6,868.07 km) |
| Detroit to Cusano Milanino | 4,323.56 mi (6,958.10 km) |
| Detroit to Cutro | 4,912.00 mi (7,905.10 km) |
