| Biddeford to Sinop | 4,947.46 mi (7,962.16 km) |
| Biddeford to Siran | 5,184.70 mi (8,343.97 km) |
| Biddeford to Sirnak | 5,441.89 mi (8,757.87 km) |
| Biddeford to Sirvan | 5,398.38 mi (8,687.85 km) |
| Biddeford to Sivas | 5,126.23 mi (8,249.86 km) |
| Biddeford to Sivasli | 4,894.89 mi (7,877.57 km) |
| Biddeford to Siverek | 5,311.51 mi (8,548.05 km) |
| Biddeford to Sivrice | 5,277.04 mi (8,492.57 km) |
| Biddeford to Sivrihisar | 4,925.95 mi (7,927.56 km) |
| Biddeford to Sogut | 4,845.81 mi (7,798.57 km) |
| Biddeford to Sogutlu | 4,818.21 mi (7,754.15 km) |
| Biddeford to Soke | 4,833.72 mi (7,779.12 km) |
| Biddeford to Solhan | 5,316.80 mi (8,556.56 km) |
| Biddeford to Soma | 4,778.24 mi (7,689.84 km) |
| Biddeford to Sorgun | 5,052.86 mi (8,131.79 km) |
