| Round Rock to Selargius | 5,708.93 mi (9,187.64 km) |
| Round Rock to Selvazzano Dentro | 5,581.73 mi (8,982.92 km) |
| Round Rock to Senago | 5,467.33 mi (8,798.81 km) |
| Round Rock to Senigallia | 5,705.98 mi (9,182.88 km) |
| Round Rock to Seravezza | 5,572.53 mi (8,968.13 km) |
| Round Rock to Seregno | 5,467.53 mi (8,799.14 km) |
| Round Rock to Seriate | 5,487.17 mi (8,830.74 km) |
| Round Rock to Sermoneta | 5,783.67 mi (9,307.92 km) |
| Round Rock to Serramanna | 5,691.83 mi (9,160.11 km) |
| Round Rock to Serravalle Pistoiese | 5,601.14 mi (9,014.16 km) |
| Round Rock to Sessa Aurunca | 5,836.35 mi (9,392.70 km) |
| Round Rock to Sesto Calende | 5,441.41 mi (8,757.10 km) |
| Round Rock to Sesto Fiorentino | 5,618.82 mi (9,042.62 km) |
| Round Rock to Sesto San Giovanni | 5,473.27 mi (8,808.37 km) |
| Round Rock to Sestri Levante | 5,527.38 mi (8,895.46 km) |
