| West Mifflin to Sesena | 3,884.07 mi (6,250.81 km) |
| West Mifflin to Sestao | 3,818.09 mi (6,144.62 km) |
| West Mifflin to Sevilla | 3,865.70 mi (6,221.24 km) |
| West Mifflin to Sevilla La Nueva | 3,860.90 mi (6,213.51 km) |
| West Mifflin to Silla | 4,062.40 mi (6,537.80 km) |
| West Mifflin to Silleda | 3,595.01 mi (5,785.60 km) |
| West Mifflin to Sitges | 4,102.30 mi (6,602.02 km) |
| West Mifflin to Socuellamos | 3,952.54 mi (6,361.01 km) |
| West Mifflin to Soller | 4,193.04 mi (6,748.04 km) |
| West Mifflin to Solsona | 4,064.20 mi (6,540.71 km) |
| West Mifflin to Son Servera | 4,228.45 mi (6,805.03 km) |
| West Mifflin to Sonseca | 3,884.91 mi (6,252.16 km) |
| West Mifflin to Sopelana | 3,817.19 mi (6,143.18 km) |
| West Mifflin to Soria | 3,889.54 mi (6,259.61 km) |
| West Mifflin to Suances | 3,767.00 mi (6,062.41 km) |
