| Swindon to Sestu | 995.36 mi (1,601.88 km) |
| Swindon to Settimo Torinese | 623.02 mi (1,002.65 km) |
| Swindon to Seveso | 643.77 mi (1,036.05 km) |
| Swindon to Sezze | 987.00 mi (1,588.42 km) |
| Swindon to Siano | 1,078.69 mi (1,735.98 km) |
| Swindon to Siena | 834.19 mi (1,342.49 km) |
| Swindon to Signa | 802.77 mi (1,291.94 km) |
| Swindon to Silea | 759.67 mi (1,222.58 km) |
| Swindon to Silvi Paese | 969.75 mi (1,560.67 km) |
| Swindon to Sinalunga | 853.04 mi (1,372.84 km) |
| Swindon to Siniscola | 935.07 mi (1,504.84 km) |
| Swindon to Sinnai | 997.98 mi (1,606.10 km) |
| Swindon to Siracusa | 1,302.73 mi (2,096.54 km) |
| Swindon to Solaro | 643.24 mi (1,035.20 km) |
| Swindon to Soliera | 749.98 mi (1,206.97 km) |
