| Keystone to Santa Ursula | 3,967.03 mi (6,384.31 km) |
| Keystone to Santander | 4,376.29 mi (7,042.96 km) |
| Keystone to Santany | 4,803.82 mi (7,731.01 km) |
| Keystone to Santiago de Compostela | 4,153.15 mi (6,683.85 km) |
| Keystone to Santiago del Teide | 3,950.84 mi (6,358.27 km) |
| Keystone to Santiponce | 4,373.25 mi (7,038.07 km) |
| Keystone to Santomera | 4,620.77 mi (7,436.42 km) |
| Keystone to Santona | 4,393.53 mi (7,070.70 km) |
| Keystone to Santurce-Antiguo | 4,416.18 mi (7,107.15 km) |
| Keystone to Sarria | 4,210.36 mi (6,775.92 km) |
| Keystone to Sauzal | 3,969.19 mi (6,387.79 km) |
| Keystone to Sedavi | 4,625.03 mi (7,443.26 km) |
| Keystone to Segorbe | 4,610.59 mi (7,420.03 km) |
| Keystone to Segovia | 4,405.93 mi (7,090.66 km) |
| Keystone to Senmanat | 4,702.70 mi (7,568.26 km) |
