| Pittsburgh to Sesena | 3,884.79 mi (6,251.96 km) |
| Pittsburgh to Sestao | 3,818.37 mi (6,145.07 km) |
| Pittsburgh to Sevilla | 3,866.89 mi (6,223.15 km) |
| Pittsburgh to Sevilla La Nueva | 3,861.60 mi (6,214.64 km) |
| Pittsburgh to Silla | 4,063.04 mi (6,538.83 km) |
| Pittsburgh to Silleda | 3,595.60 mi (5,786.55 km) |
| Pittsburgh to Sitges | 4,102.61 mi (6,602.52 km) |
| Pittsburgh to Socuellamos | 3,953.32 mi (6,362.25 km) |
| Pittsburgh to Soller | 4,193.47 mi (6,748.74 km) |
| Pittsburgh to Solsona | 4,064.44 mi (6,541.08 km) |
| Pittsburgh to Son Servera | 4,228.87 mi (6,805.71 km) |
| Pittsburgh to Sonseca | 3,885.69 mi (6,253.42 km) |
| Pittsburgh to Sopelana | 3,817.46 mi (6,143.61 km) |
| Pittsburgh to Soria | 3,889.99 mi (6,260.33 km) |
| Pittsburgh to Suances | 3,767.31 mi (6,062.91 km) |
