| Mason City to Cabestany | 4,562.36 mi (7,342.40 km) |
| Mason City to Cabries | 4,627.12 mi (7,446.64 km) |
| Mason City to Cachan | 4,289.59 mi (6,903.42 km) |
| Mason City to Caen | 4,172.95 mi (6,715.72 km) |
| Mason City to Cagnes-sur-Mer | 4,686.52 mi (7,542.22 km) |
| Mason City to Cahors | 4,429.05 mi (7,127.86 km) |
| Mason City to Calais | 4,188.50 mi (6,740.74 km) |
| Mason City to Caluire-et-Cuire | 4,506.66 mi (7,252.77 km) |
| Mason City to Cambrai | 4,268.50 mi (6,869.48 km) |
| Mason City to Canet-en-Roussillon | 4,563.90 mi (7,344.89 km) |
| Mason City to Cannes | 4,686.18 mi (7,541.67 km) |
| Mason City to Canteleu | 4,215.52 mi (6,784.23 km) |
| Mason City to Capbreton | 4,345.26 mi (6,993.02 km) |
| Mason City to Carcassonne | 4,516.36 mi (7,268.37 km) |
| Mason City to Carmaux | 4,473.96 mi (7,200.14 km) |
