| Mason City to Carmignano | 4,827.29 mi (7,768.78 km) |
| Mason City to Carovigno | 5,222.39 mi (8,404.62 km) |
| Mason City to Carpenedolo | 4,735.66 mi (7,621.31 km) |
| Mason City to Carpi | 4,778.54 mi (7,690.31 km) |
| Mason City to Carrara | 4,780.94 mi (7,694.18 km) |
| Mason City to Carugate | 4,686.68 mi (7,542.49 km) |
| Mason City to Casal di Principe | 5,075.02 mi (8,167.46 km) |
| Mason City to Casale Monferrato | 4,672.22 mi (7,519.22 km) |
| Mason City to Casale sul Sile | 4,794.72 mi (7,716.36 km) |
| Mason City to Casalecchio di Reno | 4,806.97 mi (7,736.08 km) |
| Mason City to Casalgrande | 4,781.98 mi (7,695.85 km) |
| Mason City to Casalmaggiore | 4,752.02 mi (7,647.63 km) |
| Mason City to Casalnuovo di Napoli | 5,087.98 mi (8,188.31 km) |
| Mason City to Casalpusterlengo | 4,714.97 mi (7,588.01 km) |
| Mason City to Casaluce | 5,078.34 mi (8,172.80 km) |
