| Flagstaff to Senftenberg | 5,603.24 mi (9,017.55 km) |
| Flagstaff to Siegburg | 5,431.19 mi (8,740.65 km) |
| Flagstaff to Siegen | 5,453.07 mi (8,775.88 km) |
| Flagstaff to Sigmaringen | 5,626.42 mi (9,054.84 km) |
| Flagstaff to Simbach am Inn | 5,738.92 mi (9,235.91 km) |
| Flagstaff to Simmerath | 5,411.58 mi (8,709.10 km) |
| Flagstaff to Sindelfingen | 5,589.00 mi (8,994.63 km) |
| Flagstaff to Sinsheim | 5,559.14 mi (8,946.58 km) |
| Flagstaff to Sinzheim | 5,559.40 mi (8,946.98 km) |
| Flagstaff to Sinzig | 5,444.80 mi (8,762.56 km) |
| Flagstaff to Soest | 5,423.19 mi (8,727.79 km) |
| Flagstaff to Solingen | 5,410.12 mi (8,706.75 km) |
| Flagstaff to Soltau | 5,407.65 mi (8,702.77 km) |
| Flagstaff to Sommerda | 5,535.34 mi (8,908.27 km) |
| Flagstaff to Sondershausen | 5,517.65 mi (8,879.80 km) |
