| Portage to Collegno | 4,384.95 mi (7,056.90 km) |
| Portage to Cologno al Serio | 4,450.06 mi (7,161.68 km) |
| Portage to Cologno Monzese | 4,435.52 mi (7,138.29 km) |
| Portage to Colorno | 4,503.17 mi (7,247.16 km) |
| Portage to Comacchio | 4,583.86 mi (7,377.01 km) |
| Portage to Comiso | 5,016.17 mi (8,072.75 km) |
| Portage to Como | 4,416.79 mi (7,108.14 km) |
| Portage to Concordia Sagittaria | 4,565.79 mi (7,347.92 km) |
| Portage to Concorezzo | 4,435.39 mi (7,138.07 km) |
| Portage to Conegliano | 4,539.47 mi (7,305.57 km) |
| Portage to Conselice | 4,577.62 mi (7,366.97 km) |
| Portage to Conselve | 4,549.48 mi (7,321.68 km) |
| Portage to Conversano | 4,939.99 mi (7,950.15 km) |
| Portage to Copertino | 5,008.64 mi (8,060.62 km) |
| Portage to Copparo | 4,561.85 mi (7,341.58 km) |
