| Bilbao to Sangeorgiu de Mures | 1,352.56 mi (2,176.73 km) |
| Bilbao to Sangeorz-Bai | 1,363.36 mi (2,194.12 km) |
| Bilbao to Sannicolau Mare | 1,168.39 mi (1,880.34 km) |
| Bilbao to Santana | 1,211.22 mi (1,949.27 km) |
| Bilbao to Satu Mare | 1,281.67 mi (2,062.65 km) |
| Bilbao to Scobinti | 1,468.79 mi (2,363.79 km) |
| Bilbao to Scornicesti | 1,364.01 mi (2,195.16 km) |
| Bilbao to Sebes | 1,310.32 mi (2,108.75 km) |
| Bilbao to Seini | 1,299.76 mi (2,091.76 km) |
| Bilbao to Sfantu-Gheorghe | 1,417.09 mi (2,280.59 km) |
| Bilbao to Sibiu | 1,338.66 mi (2,154.37 km) |
| Bilbao to Sighetu Marmatiei | 1,328.73 mi (2,138.39 km) |
| Bilbao to Sighisoara | 1,368.38 mi (2,202.19 km) |
| Bilbao to Simeria | 1,283.58 mi (2,065.73 km) |
| Bilbao to Sinaia | 1,407.99 mi (2,265.94 km) |
