| Mason City to Sabadell | 4,575.95 mi (7,364.28 km) |
| Mason City to Sabinanigo | 4,434.19 mi (7,136.14 km) |
| Mason City to Sagunto | 4,554.83 mi (7,330.30 km) |
| Mason City to Salamanca | 4,272.22 mi (6,875.47 km) |
| Mason City to Salobrena | 4,532.50 mi (7,294.35 km) |
| Mason City to Salou | 4,555.30 mi (7,331.05 km) |
| Mason City to Salt | 4,585.75 mi (7,380.05 km) |
| Mason City to Salvatierra de Mino | 4,107.22 mi (6,609.93 km) |
| Mason City to Sama | 4,181.91 mi (6,730.13 km) |
| Mason City to San Adrian de Besos | 4,585.45 mi (7,379.57 km) |
| Mason City to San Agustin de Guadalix | 4,371.57 mi (7,035.36 km) |
| Mason City to San Andres de la Barca | 4,574.80 mi (7,362.44 km) |
| Mason City to San Andres de Llevaneras | 4,590.28 mi (7,387.34 km) |
| Mason City to San Andres del Rabanedo | 4,211.37 mi (6,777.54 km) |
| Mason City to San Bartolome | 4,333.22 mi (6,973.65 km) |
