| Portici to Sestao | 904.53 mi (1,455.70 km) |
| Portici to Sevilla | 1,116.16 mi (1,796.29 km) |
| Portici to Sevilla La Nueva | 962.71 mi (1,549.33 km) |
| Portici to Silla | 785.26 mi (1,263.75 km) |
| Portici to Silleda | 1,167.19 mi (1,878.41 km) |
| Portici to Sitges | 653.53 mi (1,051.76 km) |
| Portici to Socuellamos | 910.83 mi (1,465.84 km) |
| Portici to Soller | 617.33 mi (993.49 km) |
| Portici to Solsona | 668.83 mi (1,076.37 km) |
| Portici to Son Servera | 584.83 mi (941.19 km) |
| Portici to Sonseca | 965.76 mi (1,554.24 km) |
| Portici to Sopelana | 903.65 mi (1,454.28 km) |
| Portici to Soria | 873.59 mi (1,405.91 km) |
| Portici to Suances | 957.51 mi (1,540.96 km) |
| Portici to Sueca | 782.46 mi (1,259.25 km) |
