| Mason City to Cavaillon | 4,596.76 mi (7,397.77 km) |
| Mason City to Cebazat | 4,437.81 mi (7,141.97 km) |
| Mason City to Cenon | 4,333.66 mi (6,974.35 km) |
| Mason City to Cergy | 4,269.96 mi (6,871.84 km) |
| Mason City to Cernay | 4,509.32 mi (7,257.04 km) |
| Mason City to Cesson | 4,308.59 mi (6,934.01 km) |
| Mason City to Cesson-Sevigne | 4,165.54 mi (6,703.80 km) |
| Mason City to Cestas | 4,332.09 mi (6,971.83 km) |
| Mason City to Chalette-sur-Loing | 4,335.69 mi (6,977.62 km) |
| Mason City to Challans | 4,202.91 mi (6,763.93 km) |
| Mason City to Chalon-sur-Saone | 4,465.80 mi (7,187.02 km) |
| Mason City to Chalons-en-Champagne | 4,358.42 mi (7,014.20 km) |
| Mason City to Chamalieres | 4,438.90 mi (7,143.71 km) |
| Mason City to Chambery | 4,556.87 mi (7,333.57 km) |
| Mason City to Chambly | 4,271.75 mi (6,874.71 km) |
