| Mason City to Sereflikochisar | 5,859.92 mi (9,430.64 km) |
| Mason City to Serik | 5,893.11 mi (9,484.04 km) |
| Mason City to Serinhisar | 5,795.23 mi (9,326.52 km) |
| Mason City to Serinyol | 6,089.23 mi (9,799.67 km) |
| Mason City to Seydisehir | 5,890.32 mi (9,479.55 km) |
| Mason City to Seyhan | 6,026.89 mi (9,699.34 km) |
| Mason City to Seyitgazi | 5,740.90 mi (9,239.09 km) |
| Mason City to Siirt | 6,169.44 mi (9,928.76 km) |
| Mason City to Sile | 5,611.58 mi (9,030.97 km) |
| Mason City to Silifke | 6,016.37 mi (9,682.41 km) |
| Mason City to Silivri | 5,572.68 mi (8,968.36 km) |
| Mason City to Silopi | 6,224.29 mi (10,017.03 km) |
| Mason City to Simav | 5,704.20 mi (9,180.03 km) |
| Mason City to Sinanpasa | 5,764.38 mi (9,276.87 km) |
| Mason City to Sindirgi | 5,668.66 mi (9,122.82 km) |
