| McDonough to Cortona | 4,959.01 mi (7,980.75 km) |
| McDonough to Cosenza | 5,289.67 mi (8,512.90 km) |
| McDonough to Cossato | 4,718.54 mi (7,593.75 km) |
| McDonough to Costa Volpino | 4,793.65 mi (7,714.63 km) |
| McDonough to Creazzo | 4,862.35 mi (7,825.20 km) |
| McDonough to Crema | 4,790.41 mi (7,709.42 km) |
| McDonough to Cremona | 4,812.94 mi (7,745.67 km) |
| McDonough to Crevalcore | 4,874.68 mi (7,845.04 km) |
| McDonough to Crispiano | 5,285.18 mi (8,505.68 km) |
| McDonough to Crosia | 5,302.99 mi (8,534.34 km) |
| McDonough to Crotone | 5,336.81 mi (8,588.77 km) |
| McDonough to Cuneo | 4,727.60 mi (7,608.34 km) |
| McDonough to Cuorgne | 4,701.41 mi (7,566.19 km) |
| McDonough to Cusano Milanino | 4,763.07 mi (7,665.42 km) |
| McDonough to Cutro | 5,332.66 mi (8,582.09 km) |
