| Port Glasgow to San Vendemiano | 1,010.73 mi (1,626.61 km) |
| Port Glasgow to San Vito al Tagliamento | 1,026.88 mi (1,652.61 km) |
| Port Glasgow to San Vito dei Normanni | 1,461.65 mi (2,352.30 km) |
| Port Glasgow to Sannicandro di Bari | 1,414.60 mi (2,276.57 km) |
| Port Glasgow to Sannicandro Garganico | 1,330.46 mi (2,141.18 km) |
| Port Glasgow to Sansepolcro | 1,131.40 mi (1,820.81 km) |
| Port Glasgow to Sant'Agata de' Goti | 1,341.04 mi (2,158.19 km) |
| Port Glasgow to Sant'Agata di Militello | 1,522.71 mi (2,450.56 km) |
| Port Glasgow to Sant'Agnello | 1,364.82 mi (2,196.46 km) |
| Port Glasgow to Sant'Ambrogio di Valpolicella | 984.96 mi (1,585.14 km) |
| Port Glasgow to Sant'Anastasia | 1,351.08 mi (2,174.35 km) |
| Port Glasgow to Sant'Angelo Lodigiano | 959.93 mi (1,544.86 km) |
| Port Glasgow to Sant'Antimo | 1,341.99 mi (2,159.73 km) |
| Port Glasgow to Sant'Antioco | 1,312.00 mi (2,111.46 km) |
| Port Glasgow to Sant'Antonio Abate | 1,363.09 mi (2,193.67 km) |
