| Mason City to Seysses | 4,462.66 mi (7,181.96 km) |
| Mason City to Sin-le-Noble | 4,256.74 mi (6,850.56 km) |
| Mason City to Six-Fours-les-Plages | 4,659.10 mi (7,498.09 km) |
| Mason City to Soissons | 4,303.10 mi (6,925.16 km) |
| Mason City to Soisy-sous-Montmorency | 4,280.68 mi (6,889.09 km) |
| Mason City to Sollies-Pont | 4,663.94 mi (7,505.88 km) |
| Mason City to Somain | 4,263.03 mi (6,860.68 km) |
| Mason City to Sorgues | 4,583.00 mi (7,375.62 km) |
| Mason City to Sotteville-les-Rouen | 4,219.15 mi (6,790.06 km) |
| Mason City to Soyaux | 4,331.79 mi (6,971.34 km) |
| Mason City to Stains | 4,285.29 mi (6,896.50 km) |
| Mason City to Stiring-Wendel | 4,441.79 mi (7,148.37 km) |
| Mason City to Strasbourg | 4,497.16 mi (7,237.47 km) |
| Mason City to Sucy-en-Brie | 4,297.60 mi (6,916.32 km) |
| Mason City to Suresnes | 4,282.33 mi (6,891.75 km) |
