| Mason City to Castelletto sopra Ticino | 4,653.27 mi (7,488.71 km) |
| Mason City to Castelli Calepio | 4,704.02 mi (7,570.39 km) |
| Mason City to Castelnovo ne' Monti | 4,776.29 mi (7,686.69 km) |
| Mason City to Castelnuovo Berardenga | 4,867.03 mi (7,832.74 km) |
| Mason City to Castelnuovo di Porto | 4,960.67 mi (7,983.42 km) |
| Mason City to Castelnuovo di Verona | 4,744.96 mi (7,636.28 km) |
| Mason City to Castelnuovo Rangone | 4,790.93 mi (7,710.26 km) |
| Mason City to Castelvetrano | 5,181.33 mi (8,338.55 km) |
| Mason City to Castelvetro di Modena | 4,793.82 mi (7,714.90 km) |
| Mason City to Castenaso | 4,812.73 mi (7,745.34 km) |
| Mason City to Castenedolo | 4,725.95 mi (7,605.68 km) |
| Mason City to Castiglion Fiorentino | 4,882.77 mi (7,858.05 km) |
| Mason City to Castiglione del Lago | 4,897.06 mi (7,881.05 km) |
| Mason City to Castiglione delle Stiviere | 4,736.61 mi (7,622.84 km) |
| Mason City to Castrolibero | 5,235.11 mi (8,425.10 km) |
