| Mason City to Casamassima | 5,182.46 mi (8,340.36 km) |
| Mason City to Casandrino | 5,083.41 mi (8,180.95 km) |
| Mason City to Casapulla | 5,078.32 mi (8,172.77 km) |
| Mason City to Casarano | 5,274.50 mi (8,488.49 km) |
| Mason City to Casatenovo | 4,679.33 mi (7,530.66 km) |
| Mason City to Casciana Terme | 4,825.41 mi (7,765.75 km) |
| Mason City to Cascina | 4,815.77 mi (7,750.23 km) |
| Mason City to Caselle Torinese | 4,639.67 mi (7,466.83 km) |
| Mason City to Caserta | 5,080.21 mi (8,175.81 km) |
| Mason City to Casier | 4,791.23 mi (7,710.74 km) |
| Mason City to Casorate Primo | 4,685.16 mi (7,540.04 km) |
| Mason City to Casoria | 5,086.88 mi (8,186.55 km) |
| Mason City to Cassano al Ionio | 5,216.83 mi (8,395.68 km) |
| Mason City to Cassano d'Adda | 4,694.24 mi (7,554.65 km) |
| Mason City to Cassano delle Murge | 5,180.15 mi (8,336.65 km) |
