| Fort Collins to Santa Ursula | 4,903.49 mi (7,891.40 km) |
| Fort Collins to Santander | 4,847.22 mi (7,800.84 km) |
| Fort Collins to Santany | 5,304.67 mi (8,537.03 km) |
| Fort Collins to Santiago de Compostela | 4,679.14 mi (7,530.36 km) |
| Fort Collins to Santiago del Teide | 4,893.04 mi (7,874.59 km) |
| Fort Collins to Santiponce | 5,009.94 mi (8,062.72 km) |
| Fort Collins to Santomera | 5,194.04 mi (8,359.01 km) |
| Fort Collins to Santona | 4,861.91 mi (7,824.49 km) |
| Fort Collins to Santurce-Antiguo | 4,883.51 mi (7,859.25 km) |
| Fort Collins to Sarria | 4,729.39 mi (7,611.22 km) |
| Fort Collins to Sauzal | 4,903.98 mi (7,892.19 km) |
| Fort Collins to Sedavi | 5,160.28 mi (8,304.68 km) |
| Fort Collins to Segorbe | 5,137.06 mi (8,267.30 km) |
| Fort Collins to Segovia | 4,941.22 mi (7,952.12 km) |
| Fort Collins to Senmanat | 5,162.15 mi (8,307.68 km) |
