| Gresham to Cortona | 5,695.35 mi (9,165.78 km) |
| Gresham to Cosenza | 6,042.71 mi (9,724.80 km) |
| Gresham to Cossato | 5,461.81 mi (8,789.93 km) |
| Gresham to Costa Volpino | 5,496.15 mi (8,845.20 km) |
| Gresham to Creazzo | 5,548.36 mi (8,929.23 km) |
| Gresham to Crema | 5,512.81 mi (8,872.00 km) |
| Gresham to Cremona | 5,535.48 mi (8,908.49 km) |
| Gresham to Crevalcore | 5,588.45 mi (8,993.74 km) |
| Gresham to Crispiano | 5,986.79 mi (9,634.80 km) |
| Gresham to Crosia | 6,039.06 mi (9,718.92 km) |
| Gresham to Crotone | 6,077.31 mi (9,780.49 km) |
| Gresham to Cuneo | 5,514.04 mi (8,873.98 km) |
| Gresham to Cuorgne | 5,458.44 mi (8,784.52 km) |
| Gresham to Cusano Milanino | 5,489.21 mi (8,834.04 km) |
| Gresham to Cutro | 6,077.14 mi (9,780.21 km) |
