| Arouca to Solofra | 1,202.91 mi (1,935.89 km) |
| Arouca to Somma Lombardo | 910.75 mi (1,465.72 km) |
| Arouca to Somma Vesuviana | 1,181.15 mi (1,900.88 km) |
| Arouca to Sommacampagna | 1,007.70 mi (1,621.73 km) |
| Arouca to Sona | 1,007.35 mi (1,621.17 km) |
| Arouca to Sondrio | 973.83 mi (1,567.22 km) |
| Arouca to Sora | 1,132.58 mi (1,822.71 km) |
| Arouca to Sorbolo | 981.64 mi (1,579.80 km) |
| Arouca to Soresina | 958.88 mi (1,543.17 km) |
| Arouca to Sorisole | 956.36 mi (1,539.12 km) |
| Arouca to Sorrento | 1,180.24 mi (1,899.42 km) |
| Arouca to Sorso | 877.67 mi (1,412.47 km) |
| Arouca to Sortino | 1,271.85 mi (2,046.85 km) |
| Arouca to Soverato Marina | 1,320.70 mi (2,125.46 km) |
| Arouca to Sovicille | 1,009.15 mi (1,624.07 km) |
