| Fort Collins to Spello | 5,483.54 mi (8,824.91 km) |
| Fort Collins to Spilamberto | 5,349.34 mi (8,608.94 km) |
| Fort Collins to Spilimbergo | 5,332.97 mi (8,582.58 km) |
| Fort Collins to Spinea | 5,340.61 mi (8,594.88 km) |
| Fort Collins to Spoleto | 5,495.71 mi (8,844.50 km) |
| Fort Collins to Spoltore | 5,561.18 mi (8,949.86 km) |
| Fort Collins to Spresiano | 5,329.14 mi (8,576.42 km) |
| Fort Collins to Squinzano | 5,799.45 mi (9,333.31 km) |
| Fort Collins to Statte | 5,763.66 mi (9,275.71 km) |
| Fort Collins to Stezzano | 5,247.69 mi (8,445.34 km) |
| Fort Collins to Strada | 5,406.78 mi (8,701.37 km) |
| Fort Collins to Stradella | 5,263.02 mi (8,470.01 km) |
| Fort Collins to Striano | 5,660.00 mi (9,108.89 km) |
| Fort Collins to Subiaco | 5,551.76 mi (8,934.69 km) |
| Fort Collins to Sulmona | 5,574.63 mi (8,971.49 km) |
