| Marshalltown to Cortona | 4,928.92 mi (7,932.34 km) |
| Marshalltown to Cosenza | 5,277.33 mi (8,493.05 km) |
| Marshalltown to Cossato | 4,682.78 mi (7,536.20 km) |
| Marshalltown to Costa Volpino | 4,744.37 mi (7,635.32 km) |
| Marshalltown to Creazzo | 4,809.01 mi (7,739.36 km) |
| Marshalltown to Crema | 4,748.90 mi (7,642.61 km) |
| Marshalltown to Cremona | 4,772.28 mi (7,680.24 km) |
| Marshalltown to Crevalcore | 4,832.73 mi (7,777.52 km) |
| Marshalltown to Crispiano | 5,252.54 mi (8,453.15 km) |
| Marshalltown to Crosia | 5,284.43 mi (8,504.47 km) |
| Marshalltown to Crotone | 5,321.11 mi (8,563.50 km) |
| Marshalltown to Cuneo | 4,709.48 mi (7,579.18 km) |
| Marshalltown to Cuorgne | 4,670.55 mi (7,516.52 km) |
| Marshalltown to Cusano Milanino | 4,722.07 mi (7,599.44 km) |
| Marshalltown to Cutro | 5,318.39 mi (8,559.12 km) |
