| Mason City to Cervignano del Friuli | 4,820.65 mi (7,758.09 km) |
| Mason City to Cesa | 5,081.18 mi (8,177.38 km) |
| Mason City to Cesano Maderno | 4,676.14 mi (7,525.52 km) |
| Mason City to Cesena | 4,858.36 mi (7,818.77 km) |
| Mason City to Cesenatico | 4,861.10 mi (7,823.18 km) |
| Mason City to Cetraro | 5,216.72 mi (8,395.50 km) |
| Mason City to Cherasco | 4,671.02 mi (7,517.29 km) |
| Mason City to Chiampo | 4,758.69 mi (7,658.37 km) |
| Mason City to Chiaravalle | 4,923.57 mi (7,923.73 km) |
| Mason City to Chiari | 4,708.45 mi (7,577.52 km) |
| Mason City to Chiavari | 4,741.37 mi (7,630.49 km) |
| Mason City to Chieri | 4,653.46 mi (7,489.02 km) |
| Mason City to Chieti | 5,013.14 mi (8,067.87 km) |
| Mason City to Chioggia | 4,810.11 mi (7,741.12 km) |
| Mason City to Chiusi | 4,899.00 mi (7,884.17 km) |
