| Hilo to Collegno | 7,830.66 mi (12,602.22 km) |
| Hilo to Cologno al Serio | 7,826.88 mi (12,596.15 km) |
| Hilo to Cologno Monzese | 7,824.96 mi (12,593.05 km) |
| Hilo to Colorno | 7,878.97 mi (12,679.98 km) |
| Hilo to Comacchio | 7,916.08 mi (12,739.70 km) |
| Hilo to Comiso | 8,466.11 mi (13,624.89 km) |
| Hilo to Como | 7,803.68 mi (12,558.82 km) |
| Hilo to Concordia Sagittaria | 7,851.39 mi (12,635.60 km) |
| Hilo to Concorezzo | 7,821.67 mi (12,587.76 km) |
| Hilo to Conegliano | 7,837.46 mi (12,613.17 km) |
| Hilo to Conselice | 7,924.42 mi (12,753.12 km) |
| Hilo to Conselve | 7,876.66 mi (12,676.26 km) |
| Hilo to Conversano | 8,216.15 mi (13,222.62 km) |
| Hilo to Copertino | 8,270.80 mi (13,310.56 km) |
| Hilo to Copparo | 7,898.67 mi (12,711.68 km) |
