| Portsmouth to Santa Venerina | 1,205.68 mi (1,940.36 km) |
| Portsmouth to Santeramo in Colle | 1,098.43 mi (1,767.75 km) |
| Portsmouth to Santo Stefano di Magra | 687.61 mi (1,106.61 km) |
| Portsmouth to Santo Stino di Livenza | 722.21 mi (1,162.29 km) |
| Portsmouth to Sarezzo | 628.85 mi (1,012.04 km) |
| Portsmouth to Sarno | 1,020.01 mi (1,641.55 km) |
| Portsmouth to Saronno | 586.81 mi (944.38 km) |
| Portsmouth to Sarzana | 691.59 mi (1,113.00 km) |
| Portsmouth to Sassari | 835.80 mi (1,345.08 km) |
| Portsmouth to Sasso Marconi | 723.85 mi (1,164.92 km) |
| Portsmouth to Sassuolo | 699.85 mi (1,126.29 km) |
| Portsmouth to Sava | 1,147.64 mi (1,846.94 km) |
| Portsmouth to Saviano | 1,011.39 mi (1,627.67 km) |
| Portsmouth to Savigliano | 586.73 mi (944.26 km) |
| Portsmouth to Savignano sul Panaro | 712.06 mi (1,145.95 km) |
