| Forest Grove to Cortona | 5,710.91 mi (9,190.83 km) |
| Forest Grove to Cosenza | 6,057.82 mi (9,749.12 km) |
| Forest Grove to Cossato | 5,477.94 mi (8,815.89 km) |
| Forest Grove to Costa Volpino | 5,511.63 mi (8,870.12 km) |
| Forest Grove to Creazzo | 5,563.51 mi (8,953.60 km) |
| Forest Grove to Crema | 5,528.54 mi (8,897.32 km) |
| Forest Grove to Cremona | 5,551.17 mi (8,933.74 km) |
| Forest Grove to Crevalcore | 5,603.91 mi (9,018.62 km) |
| Forest Grove to Crispiano | 6,001.27 mi (9,658.10 km) |
| Forest Grove to Crosia | 6,053.93 mi (9,742.86 km) |
| Forest Grove to Crotone | 6,092.18 mi (9,804.41 km) |
| Forest Grove to Cuneo | 5,530.67 mi (8,900.75 km) |
| Forest Grove to Cuorgne | 5,474.77 mi (8,810.80 km) |
| Forest Grove to Cusano Milanino | 5,505.05 mi (8,859.52 km) |
| Forest Grove to Cutro | 6,092.06 mi (9,804.23 km) |
