| Norristown to Solofra | 4,504.91 mi (7,249.95 km) |
| Norristown to Somma Lombardo | 4,069.52 mi (6,549.26 km) |
| Norristown to Somma Vesuviana | 4,485.24 mi (7,218.30 km) |
| Norristown to Sommacampagna | 4,170.58 mi (6,711.90 km) |
| Norristown to Sona | 4,168.77 mi (6,708.98 km) |
| Norristown to Sondrio | 4,103.85 mi (6,604.51 km) |
| Norristown to Sora | 4,418.21 mi (7,110.42 km) |
| Norristown to Sorbolo | 4,171.75 mi (6,713.78 km) |
| Norristown to Soresina | 4,131.88 mi (6,649.62 km) |
| Norristown to Sorisole | 4,108.68 mi (6,612.28 km) |
| Norristown to Sorrento | 4,491.52 mi (7,228.40 km) |
| Norristown to Sorso | 4,225.56 mi (6,800.38 km) |
| Norristown to Sortino | 4,652.36 mi (7,487.25 km) |
| Norristown to Soverato Marina | 4,662.05 mi (7,502.85 km) |
| Norristown to Sovicille | 4,258.53 mi (6,853.44 km) |
