| Alenquer to Sangeorz-Bai | 1,775.42 mi (2,857.27 km) |
| Alenquer to Sannicolau Mare | 1,573.33 mi (2,532.02 km) |
| Alenquer to Santana | 1,617.91 mi (2,603.77 km) |
| Alenquer to Satu Mare | 1,696.65 mi (2,730.50 km) |
| Alenquer to Scobinti | 1,880.45 mi (3,026.30 km) |
| Alenquer to Scornicesti | 1,757.09 mi (2,827.76 km) |
| Alenquer to Sebes | 1,713.77 mi (2,758.05 km) |
| Alenquer to Seini | 1,714.35 mi (2,758.98 km) |
| Alenquer to Sfantu-Gheorghe | 1,819.78 mi (2,928.65 km) |
| Alenquer to Sibiu | 1,740.88 mi (2,801.68 km) |
| Alenquer to Sighetu Marmatiei | 1,744.04 mi (2,806.76 km) |
| Alenquer to Sighisoara | 1,773.43 mi (2,854.05 km) |
| Alenquer to Simeria | 1,686.33 mi (2,713.88 km) |
| Alenquer to Sinaia | 1,807.12 mi (2,908.28 km) |
| Alenquer to Slatina | 1,747.83 mi (2,812.86 km) |
