| Mason City to Sangeorgiu de Mures | 5,162.73 mi (8,308.62 km) |
| Mason City to Sangeorz-Bai | 5,127.41 mi (8,251.77 km) |
| Mason City to Sannicolau Mare | 5,061.50 mi (8,145.70 km) |
| Mason City to Santana | 5,076.72 mi (8,170.19 km) |
| Mason City to Satu Mare | 5,049.54 mi (8,126.46 km) |
| Mason City to Scobinti | 5,196.46 mi (8,362.89 km) |
| Mason City to Scornicesti | 5,267.32 mi (8,476.93 km) |
| Mason City to Sebes | 5,164.09 mi (8,310.80 km) |
| Mason City to Seini | 5,064.22 mi (8,150.07 km) |
| Mason City to Sfantu-Gheorghe | 5,240.13 mi (8,433.17 km) |
| Mason City to Sibiu | 5,191.47 mi (8,354.86 km) |
| Mason City to Sighetu Marmatiei | 5,074.20 mi (8,166.13 km) |
| Mason City to Sighisoara | 5,190.19 mi (8,352.80 km) |
| Mason City to Simeria | 5,151.45 mi (8,290.46 km) |
| Mason City to Sinaia | 5,259.32 mi (8,464.06 km) |
