| Opmeer to Siran | 1,818.70 mi (2,926.92 km) |
| Opmeer to Sirnak | 2,075.05 mi (3,339.48 km) |
| Opmeer to Sirvan | 2,032.38 mi (3,270.80 km) |
| Opmeer to Sivas | 1,753.61 mi (2,822.16 km) |
| Opmeer to Sivasli | 1,534.00 mi (2,468.73 km) |
| Opmeer to Siverek | 1,938.28 mi (3,119.36 km) |
| Opmeer to Sivrice | 1,905.34 mi (3,066.36 km) |
| Opmeer to Sivrihisar | 1,554.44 mi (2,501.62 km) |
| Opmeer to Sogut | 1,475.63 mi (2,374.80 km) |
| Opmeer to Sogutlu | 1,444.84 mi (2,325.25 km) |
| Opmeer to Soke | 1,492.06 mi (2,401.24 km) |
| Opmeer to Solhan | 1,951.53 mi (3,140.68 km) |
| Opmeer to Soma | 1,423.21 mi (2,290.44 km) |
| Opmeer to Sorgun | 1,678.27 mi (2,700.91 km) |
| Opmeer to Suhut | 1,563.08 mi (2,515.54 km) |
