| Hilo to Cortona | 8,009.59 mi (12,890.19 km) |
| Hilo to Cosenza | 8,322.81 mi (13,394.27 km) |
| Hilo to Cossato | 7,807.08 mi (12,564.28 km) |
| Hilo to Costa Volpino | 7,815.52 mi (12,577.86 km) |
| Hilo to Creazzo | 7,852.13 mi (12,636.78 km) |
| Hilo to Crema | 7,841.08 mi (12,619.00 km) |
| Hilo to Cremona | 7,861.16 mi (12,651.32 km) |
| Hilo to Crevalcore | 7,902.93 mi (12,718.54 km) |
| Hilo to Crispiano | 8,242.11 mi (13,264.39 km) |
| Hilo to Crosia | 8,309.01 mi (13,372.07 km) |
| Hilo to Crotone | 8,344.86 mi (13,429.76 km) |
| Hilo to Cuneo | 7,875.97 mi (12,675.15 km) |
| Hilo to Cuorgne | 7,811.26 mi (12,571.00 km) |
| Hilo to Cusano Milanino | 7,822.26 mi (12,588.72 km) |
| Hilo to Cutro | 8,347.23 mi (13,433.58 km) |
