| Klamath Falls to Cortona | 5,870.78 mi (9,448.11 km) |
| Klamath Falls to Cosenza | 6,220.15 mi (10,010.36 km) |
| Klamath Falls to Cossato | 5,634.45 mi (9,067.77 km) |
| Klamath Falls to Costa Volpino | 5,672.14 mi (9,128.43 km) |
| Klamath Falls to Creazzo | 5,726.05 mi (9,215.19 km) |
| Klamath Falls to Crema | 5,687.50 mi (9,153.15 km) |
| Klamath Falls to Cremona | 5,710.39 mi (9,189.98 km) |
| Klamath Falls to Crevalcore | 5,764.52 mi (9,277.09 km) |
| Klamath Falls to Crispiano | 6,167.43 mi (9,925.52 km) |
| Klamath Falls to Crosia | 6,217.70 mi (10,006.43 km) |
| Klamath Falls to Crotone | 6,255.98 mi (10,068.03 km) |
| Klamath Falls to Cuneo | 5,683.92 mi (9,147.38 km) |
| Klamath Falls to Cuorgne | 5,630.01 mi (9,060.63 km) |
| Klamath Falls to Cusano Milanino | 5,663.40 mi (9,114.37 km) |
| Klamath Falls to Cutro | 6,255.52 mi (10,067.29 km) |
