| Flagstaff to Cortona | 5,958.22 mi (9,588.82 km) |
| Flagstaff to Cosenza | 6,310.43 mi (10,155.66 km) |
| Flagstaff to Cossato | 5,713.26 mi (9,194.60 km) |
| Flagstaff to Costa Volpino | 5,766.35 mi (9,280.05 km) |
| Flagstaff to Creazzo | 5,827.50 mi (9,378.46 km) |
| Flagstaff to Crema | 5,775.10 mi (9,294.13 km) |
| Flagstaff to Cremona | 5,798.54 mi (9,331.85 km) |
| Flagstaff to Crevalcore | 5,857.20 mi (9,426.25 km) |
| Flagstaff to Crispiano | 6,274.87 mi (10,098.42 km) |
| Flagstaff to Crosia | 6,314.05 mi (10,161.48 km) |
| Flagstaff to Crotone | 6,351.69 mi (10,222.06 km) |
| Flagstaff to Cuneo | 5,748.65 mi (9,251.57 km) |
| Flagstaff to Cuorgne | 5,703.83 mi (9,179.42 km) |
| Flagstaff to Cusano Milanino | 5,749.04 mi (9,252.19 km) |
| Flagstaff to Cutro | 6,349.78 mi (10,218.99 km) |
