| Biddeford to Sangeorgiu de Mures | 4,341.10 mi (6,986.33 km) |
| Biddeford to Sangeorz-Bai | 4,316.38 mi (6,946.54 km) |
| Biddeford to Sannicolau Mare | 4,209.10 mi (6,773.88 km) |
| Biddeford to Santana | 4,233.19 mi (6,812.66 km) |
| Biddeford to Satu Mare | 4,231.32 mi (6,809.66 km) |
| Biddeford to Scobinti | 4,401.13 mi (7,082.94 km) |
| Biddeford to Scornicesti | 4,424.88 mi (7,121.16 km) |
| Biddeford to Sebes | 4,329.92 mi (6,968.33 km) |
| Biddeford to Seini | 4,248.12 mi (6,836.69 km) |
| Biddeford to Sfantu-Gheorghe | 4,420.07 mi (7,113.42 km) |
| Biddeford to Sibiu | 4,359.40 mi (7,015.78 km) |
| Biddeford to Sighetu Marmatiei | 4,264.20 mi (6,862.57 km) |
| Biddeford to Sighisoara | 4,367.10 mi (7,028.17 km) |
| Biddeford to Simeria | 4,312.34 mi (6,940.04 km) |
| Biddeford to Sinaia | 4,432.09 mi (7,132.76 km) |
