| Flagstaff to Solofra | 6,181.83 mi (9,948.69 km) |
| Flagstaff to Somma Lombardo | 5,725.99 mi (9,215.08 km) |
| Flagstaff to Somma Vesuviana | 6,165.57 mi (9,922.52 km) |
| Flagstaff to Sommacampagna | 5,812.97 mi (9,355.07 km) |
| Flagstaff to Sona | 5,810.75 mi (9,351.50 km) |
| Flagstaff to Sondrio | 5,741.93 mi (9,240.74 km) |
| Flagstaff to Sora | 6,093.68 mi (9,806.84 km) |
| Flagstaff to Sorbolo | 5,826.90 mi (9,377.50 km) |
| Flagstaff to Soresina | 5,784.97 mi (9,310.01 km) |
| Flagstaff to Sorisole | 5,755.97 mi (9,263.34 km) |
| Flagstaff to Sorrento | 6,176.06 mi (9,939.41 km) |
| Flagstaff to Sorso | 5,959.55 mi (9,590.97 km) |
| Flagstaff to Sortino | 6,379.37 mi (10,266.60 km) |
| Flagstaff to Soverato Marina | 6,353.40 mi (10,224.81 km) |
| Flagstaff to Sovicille | 5,931.81 mi (9,546.33 km) |
