| Willow Grove to Solofra | 4,494.18 mi (7,232.68 km) |
| Willow Grove to Somma Lombardo | 4,059.00 mi (6,532.32 km) |
| Willow Grove to Somma Vesuviana | 4,474.50 mi (7,201.02 km) |
| Willow Grove to Sommacampagna | 4,160.11 mi (6,695.04 km) |
| Willow Grove to Sona | 4,158.30 mi (6,692.13 km) |
| Willow Grove to Sondrio | 4,093.42 mi (6,587.72 km) |
| Willow Grove to Sora | 4,407.51 mi (7,093.19 km) |
| Willow Grove to Sorbolo | 4,161.21 mi (6,696.82 km) |
| Willow Grove to Soresina | 4,121.36 mi (6,632.69 km) |
| Willow Grove to Sorisole | 4,098.20 mi (6,595.41 km) |
| Willow Grove to Sorrento | 4,480.75 mi (7,211.07 km) |
| Willow Grove to Sorso | 4,214.60 mi (6,782.74 km) |
| Willow Grove to Sortino | 4,641.36 mi (7,469.54 km) |
| Willow Grove to Soverato Marina | 4,651.22 mi (7,485.42 km) |
| Willow Grove to Sovicille | 4,247.87 mi (6,836.29 km) |
