| Mason City to Celano | 5,002.76 mi (8,051.17 km) |
| Mason City to Cento | 4,795.63 mi (7,717.82 km) |
| Mason City to Cepagatti | 5,008.62 mi (8,060.60 km) |
| Mason City to Ceprano | 5,026.46 mi (8,089.31 km) |
| Mason City to Cercola | 5,090.36 mi (8,192.14 km) |
| Mason City to Cerea | 4,772.05 mi (7,679.87 km) |
| Mason City to Cerese | 4,761.57 mi (7,663.01 km) |
| Mason City to Cerignola | 5,129.39 mi (8,254.95 km) |
| Mason City to Cermenate | 4,670.77 mi (7,516.88 km) |
| Mason City to Cernusco sul Naviglio | 4,688.15 mi (7,544.85 km) |
| Mason City to Cerreto Guidi | 4,824.55 mi (7,764.36 km) |
| Mason City to Cerro Maggiore | 4,670.20 mi (7,515.96 km) |
| Mason City to Certaldo | 4,840.44 mi (7,789.94 km) |
| Mason City to Cerveteri | 4,951.67 mi (7,968.94 km) |
| Mason City to Cervia | 4,856.98 mi (7,816.55 km) |
