| Grand Forks to Cortona | 4,805.66 mi (7,733.96 km) |
| Grand Forks to Cosenza | 5,158.01 mi (8,301.01 km) |
| Grand Forks to Cossato | 4,560.94 mi (7,340.13 km) |
| Grand Forks to Costa Volpino | 4,613.45 mi (7,424.63 km) |
| Grand Forks to Creazzo | 4,674.50 mi (7,522.88 km) |
| Grand Forks to Crema | 4,622.41 mi (7,439.05 km) |
| Grand Forks to Cremona | 4,645.84 mi (7,476.76 km) |
| Grand Forks to Crevalcore | 4,704.38 mi (7,570.96 km) |
| Grand Forks to Crispiano | 5,121.88 mi (8,242.87 km) |
| Grand Forks to Crosia | 5,161.36 mi (8,306.40 km) |
| Grand Forks to Crotone | 5,199.05 mi (8,367.06 km) |
| Grand Forks to Cuneo | 4,597.43 mi (7,398.85 km) |
| Grand Forks to Cuorgne | 4,551.82 mi (7,325.44 km) |
| Grand Forks to Cusano Milanino | 4,596.41 mi (7,397.21 km) |
| Grand Forks to Cutro | 5,197.20 mi (8,364.08 km) |
