| Round Rock to Solofra | 5,891.17 mi (9,480.92 km) |
| Round Rock to Somma Lombardo | 5,445.98 mi (8,764.46 km) |
| Round Rock to Somma Vesuviana | 5,872.28 mi (9,450.52 km) |
| Round Rock to Sommacampagna | 5,543.68 mi (8,921.69 km) |
| Round Rock to Sona | 5,541.72 mi (8,918.54 km) |
| Round Rock to Sondrio | 5,474.91 mi (8,811.01 km) |
| Round Rock to Sora | 5,803.37 mi (9,339.61 km) |
| Round Rock to Sorbolo | 5,548.80 mi (8,929.93 km) |
| Round Rock to Soresina | 5,507.92 mi (8,864.14 km) |
| Round Rock to Sorisole | 5,482.69 mi (8,823.54 km) |
| Round Rock to Sorrento | 5,879.74 mi (9,462.52 km) |
| Round Rock to Sorso | 5,624.29 mi (9,051.42 km) |
| Round Rock to Sortino | 6,052.08 mi (9,739.89 km) |
| Round Rock to Soverato Marina | 6,053.33 mi (9,741.90 km) |
| Round Rock to Sovicille | 5,641.72 mi (9,079.47 km) |
