| Alpena to Solofra | 4,649.99 mi (7,483.43 km) |
| Alpena to Somma Lombardo | 4,199.53 mi (6,758.49 km) |
| Alpena to Somma Vesuviana | 4,631.84 mi (7,454.23 km) |
| Alpena to Sommacampagna | 4,294.70 mi (6,911.66 km) |
| Alpena to Sona | 4,292.67 mi (6,908.38 km) |
| Alpena to Sondrio | 4,225.04 mi (6,799.54 km) |
| Alpena to Sora | 4,561.66 mi (7,341.29 km) |
| Alpena to Sorbolo | 4,302.27 mi (6,923.84 km) |
| Alpena to Soresina | 4,260.91 mi (6,857.27 km) |
| Alpena to Sorisole | 4,234.52 mi (6,814.80 km) |
| Alpena to Sorrento | 4,640.33 mi (7,467.88 km) |
| Alpena to Sorso | 4,398.03 mi (7,077.94 km) |
| Alpena to Sortino | 4,824.74 mi (7,764.67 km) |
| Alpena to Soverato Marina | 4,816.00 mi (7,750.60 km) |
| Alpena to Sovicille | 4,399.19 mi (7,079.81 km) |
