| Gresham to Collegno | 5,474.45 mi (8,810.28 km) |
| Gresham to Cologno al Serio | 5,500.53 mi (8,852.24 km) |
| Gresham to Cologno Monzese | 5,492.91 mi (8,839.99 km) |
| Gresham to Colorno | 5,556.20 mi (8,941.83 km) |
| Gresham to Comacchio | 5,615.29 mi (9,036.94 km) |
| Gresham to Comiso | 6,143.80 mi (9,887.49 km) |
| Gresham to Como | 5,471.50 mi (8,805.53 km) |
| Gresham to Concordia Sagittaria | 5,567.85 mi (8,960.59 km) |
| Gresham to Concorezzo | 5,490.82 mi (8,836.62 km) |
| Gresham to Conegliano | 5,547.31 mi (8,927.53 km) |
| Gresham to Conselice | 5,617.50 mi (9,040.49 km) |
| Gresham to Conselve | 5,575.68 mi (8,973.19 km) |
| Gresham to Conversano | 5,961.45 mi (9,594.03 km) |
| Gresham to Copertino | 6,026.69 mi (9,699.02 km) |
| Gresham to Copparo | 5,594.69 mi (9,003.78 km) |
