| Mason City to Chivasso | 4,648.19 mi (7,480.55 km) |
| Mason City to Ciampino | 4,979.99 mi (8,014.51 km) |
| Mason City to Cicciano | 5,092.53 mi (8,195.64 km) |
| Mason City to Cingoli | 4,930.12 mi (7,934.27 km) |
| Mason City to Cinisello Balsamo | 4,682.34 mi (7,535.50 km) |
| Mason City to Cinisi | 5,170.50 mi (8,321.11 km) |
| Mason City to Cirie | 4,635.42 mi (7,459.98 km) |
| Mason City to Ciro Marina | 5,267.60 mi (8,477.38 km) |
| Mason City to Cislago | 4,668.63 mi (7,513.43 km) |
| Mason City to Cisterna di Latina | 4,998.44 mi (8,044.21 km) |
| Mason City to Cisternino | 5,212.14 mi (8,388.14 km) |
| Mason City to Citta di Castello | 4,889.55 mi (7,868.97 km) |
| Mason City to Citta Sant'Angelo | 5,000.93 mi (8,048.22 km) |
| Mason City to Cittadella | 4,772.44 mi (7,680.50 km) |
| Mason City to Cittanova | 5,277.75 mi (8,493.71 km) |
