| Mason City to Busto Arsizio | 4,666.01 mi (7,509.22 km) |
| Mason City to Busto Garolfo | 4,670.13 mi (7,515.85 km) |
| Mason City to Cabras | 4,907.06 mi (7,897.14 km) |
| Mason City to Cadelbosco di Sopra | 4,768.75 mi (7,674.56 km) |
| Mason City to Cadoneghe | 4,786.99 mi (7,703.92 km) |
| Mason City to Cagli | 4,900.56 mi (7,886.70 km) |
| Mason City to Cagliari | 4,962.30 mi (7,986.06 km) |
| Mason City to Cairo Montenotte | 4,697.21 mi (7,559.43 km) |
| Mason City to Caivano | 5,084.50 mi (8,182.72 km) |
| Mason City to Calcinaia | 4,818.29 mi (7,754.28 km) |
| Mason City to Calcinato | 4,730.86 mi (7,613.58 km) |
| Mason City to Calderara di Reno | 4,802.57 mi (7,728.99 km) |
| Mason City to Caldogno | 4,764.16 mi (7,667.17 km) |
| Mason City to Calenzano | 4,830.65 mi (7,774.18 km) |
| Mason City to Calolziocorte | 4,679.36 mi (7,530.70 km) |
