| Harstad to Cortona | 1,771.27 mi (2,850.58 km) |
| Harstad to Cosenza | 2,038.36 mi (3,280.42 km) |
| Harstad to Cossato | 1,632.24 mi (2,626.83 km) |
| Harstad to Costa Volpino | 1,603.18 mi (2,580.07 km) |
| Harstad to Creazzo | 1,617.52 mi (2,603.14 km) |
| Harstad to Crema | 1,637.17 mi (2,634.78 km) |
| Harstad to Cremona | 1,651.44 mi (2,657.73 km) |
| Harstad to Crevalcore | 1,675.08 mi (2,695.77 km) |
| Harstad to Crispiano | 1,948.67 mi (3,136.09 km) |
| Harstad to Crosia | 2,019.92 mi (3,250.74 km) |
| Harstad to Crotone | 2,053.41 mi (3,304.65 km) |
| Harstad to Cuneo | 1,717.28 mi (2,763.70 km) |
| Harstad to Cuorgne | 1,647.73 mi (2,651.77 km) |
| Harstad to Cusano Milanino | 1,627.30 mi (2,618.88 km) |
| Harstad to Cutro | 2,056.86 mi (3,310.19 km) |
