| Pittsburgh to Sestu | 4,500.69 mi (7,243.15 km) |
| Pittsburgh to Settimo Torinese | 4,232.48 mi (6,811.53 km) |
| Pittsburgh to Seveso | 4,272.37 mi (6,875.72 km) |
| Pittsburgh to Sezze | 4,591.26 mi (7,388.92 km) |
| Pittsburgh to Siano | 4,688.34 mi (7,545.16 km) |
| Pittsburgh to Siena | 4,448.37 mi (7,158.96 km) |
| Pittsburgh to Signa | 4,421.41 mi (7,115.57 km) |
| Pittsburgh to Silea | 4,402.55 mi (7,085.22 km) |
| Pittsburgh to Silvi Paese | 4,595.27 mi (7,395.37 km) |
| Pittsburgh to Sinalunga | 4,469.19 mi (7,192.46 km) |
| Pittsburgh to Siniscola | 4,479.76 mi (7,209.47 km) |
| Pittsburgh to Sinnai | 4,505.55 mi (7,250.99 km) |
| Pittsburgh to Siracusa | 4,864.90 mi (7,829.29 km) |
| Pittsburgh to Solaro | 4,271.13 mi (6,873.72 km) |
| Pittsburgh to Soliera | 4,379.17 mi (7,047.60 km) |
