| Romulus to Sestu | 4,584.68 mi (7,378.34 km) |
| Romulus to Settimo Torinese | 4,299.46 mi (6,919.31 km) |
| Romulus to Seveso | 4,335.54 mi (6,977.38 km) |
| Romulus to Sezze | 4,661.75 mi (7,502.36 km) |
| Romulus to Siano | 4,758.23 mi (7,657.63 km) |
| Romulus to Siena | 4,515.91 mi (7,267.65 km) |
| Romulus to Signa | 4,487.79 mi (7,222.41 km) |
| Romulus to Silea | 4,460.87 mi (7,179.07 km) |
| Romulus to Silvi Paese | 4,660.71 mi (7,500.69 km) |
| Romulus to Sinalunga | 4,536.41 mi (7,300.65 km) |
| Romulus to Siniscola | 4,558.75 mi (7,336.61 km) |
| Romulus to Sinnai | 4,589.36 mi (7,385.86 km) |
| Romulus to Siracusa | 4,944.86 mi (7,957.98 km) |
| Romulus to Solaro | 4,334.48 mi (6,975.67 km) |
| Romulus to Soliera | 4,442.68 mi (7,149.80 km) |
