| Flagstaff to Sierpc | 5,685.93 mi (9,150.62 km) |
| Flagstaff to Skarzysko-Kamienna | 5,814.98 mi (9,358.30 km) |
| Flagstaff to Skawina | 5,847.98 mi (9,411.41 km) |
| Flagstaff to Skierniewice | 5,748.34 mi (9,251.05 km) |
| Flagstaff to Skoczow | 5,829.03 mi (9,380.91 km) |
| Flagstaff to Skwierzyna | 5,589.40 mi (8,995.27 km) |
| Flagstaff to Slawno | 5,529.35 mi (8,898.63 km) |
| Flagstaff to Slubice | 5,576.23 mi (8,974.07 km) |
| Flagstaff to Slupca | 5,669.81 mi (9,124.67 km) |
| Flagstaff to Slupsk | 5,532.95 mi (8,904.43 km) |
| Flagstaff to Sochaczew | 5,735.96 mi (9,231.14 km) |
| Flagstaff to Sokolka | 5,752.77 mi (9,258.19 km) |
| Flagstaff to Sokolow Podlaski | 5,778.15 mi (9,299.03 km) |
| Flagstaff to Solec Kujawski | 5,637.78 mi (9,073.13 km) |
| Flagstaff to Sopot | 5,573.34 mi (8,969.42 km) |
