| Swallownest to Sesena | 922.82 mi (1,485.13 km) |
| Swallownest to Sestao | 698.71 mi (1,124.47 km) |
| Swallownest to Sevilla | 1,136.16 mi (1,828.48 km) |
| Swallownest to Sevilla La Nueva | 908.09 mi (1,461.43 km) |
| Swallownest to Silla | 968.30 mi (1,558.33 km) |
| Swallownest to Silleda | 801.96 mi (1,290.63 km) |
| Swallownest to Sitges | 850.51 mi (1,368.76 km) |
| Swallownest to Socuellamos | 974.54 mi (1,568.38 km) |
| Swallownest to Soller | 958.23 mi (1,542.13 km) |
| Swallownest to Solsona | 796.33 mi (1,281.58 km) |
| Swallownest to Son Servera | 974.71 mi (1,568.65 km) |
| Swallownest to Sonseca | 952.01 mi (1,532.12 km) |
| Swallownest to Sopelana | 693.73 mi (1,116.45 km) |
| Swallownest to Soria | 802.92 mi (1,292.17 km) |
| Swallownest to Suances | 697.19 mi (1,122.01 km) |
