| River Ridge to Solofra | 5,597.93 mi (9,009.00 km) |
| River Ridge to Somma Lombardo | 5,163.00 mi (8,309.05 km) |
| River Ridge to Somma Vesuviana | 5,578.18 mi (8,977.22 km) |
| River Ridge to Sommacampagna | 5,263.95 mi (8,471.51 km) |
| River Ridge to Sona | 5,262.13 mi (8,468.58 km) |
| River Ridge to Sondrio | 5,197.08 mi (8,363.90 km) |
| River Ridge to Sora | 5,511.37 mi (8,869.70 km) |
| River Ridge to Sorbolo | 5,265.25 mi (8,473.60 km) |
| River Ridge to Soresina | 5,225.36 mi (8,409.41 km) |
| River Ridge to Sorisole | 5,202.09 mi (8,371.95 km) |
| River Ridge to Sorrento | 5,584.30 mi (8,987.06 km) |
| River Ridge to Sorso | 5,315.97 mi (8,555.22 km) |
| River Ridge to Sortino | 5,741.97 mi (9,240.80 km) |
| River Ridge to Soverato Marina | 5,754.22 mi (9,260.52 km) |
| River Ridge to Sovicille | 5,351.89 mi (8,613.03 km) |
