| Catonsville to Solofra | 4,599.87 mi (7,402.78 km) |
| Catonsville to Somma Lombardo | 4,164.70 mi (6,702.44 km) |
| Catonsville to Somma Vesuviana | 4,580.19 mi (7,371.11 km) |
| Catonsville to Sommacampagna | 4,265.79 mi (6,865.13 km) |
| Catonsville to Sona | 4,263.98 mi (6,862.21 km) |
| Catonsville to Sondrio | 4,199.08 mi (6,757.77 km) |
| Catonsville to Sora | 4,513.21 mi (7,263.31 km) |
| Catonsville to Sorbolo | 4,266.92 mi (6,866.94 km) |
| Catonsville to Soresina | 4,227.07 mi (6,802.81 km) |
| Catonsville to Sorisole | 4,203.89 mi (6,765.50 km) |
| Catonsville to Sorrento | 4,586.43 mi (7,381.14 km) |
| Catonsville to Sorso | 4,320.06 mi (6,952.46 km) |
| Catonsville to Sortino | 4,746.75 mi (7,639.16 km) |
| Catonsville to Soverato Marina | 4,756.85 mi (7,655.41 km) |
| Catonsville to Sovicille | 4,353.59 mi (7,006.42 km) |
