| Highlands Ranch to Sestu | 5,582.61 mi (8,984.35 km) |
| Highlands Ranch to Settimo Torinese | 5,255.05 mi (8,457.19 km) |
| Highlands Ranch to Seveso | 5,279.37 mi (8,496.32 km) |
| Highlands Ranch to Sezze | 5,620.86 mi (9,045.90 km) |
| Highlands Ranch to Siano | 5,713.86 mi (9,195.57 km) |
| Highlands Ranch to Siena | 5,469.05 mi (8,801.59 km) |
| Highlands Ranch to Signa | 5,438.10 mi (8,751.77 km) |
| Highlands Ranch to Silea | 5,387.56 mi (8,670.44 km) |
| Highlands Ranch to Silvi Paese | 5,604.96 mi (9,020.31 km) |
| Highlands Ranch to Sinalunga | 5,488.25 mi (8,832.48 km) |
| Highlands Ranch to Siniscola | 5,543.59 mi (8,921.54 km) |
| Highlands Ranch to Sinnai | 5,586.70 mi (8,990.93 km) |
| Highlands Ranch to Siracusa | 5,926.38 mi (9,537.58 km) |
| Highlands Ranch to Solaro | 5,278.85 mi (8,495.48 km) |
| Highlands Ranch to Soliera | 5,385.35 mi (8,666.89 km) |
