| Opelika to Sinop | 6,045.61 mi (9,729.47 km) |
| Opelika to Siran | 6,281.91 mi (10,109.76 km) |
| Opelika to Sirnak | 6,539.03 mi (10,523.55 km) |
| Opelika to Sirvan | 6,495.37 mi (10,453.28 km) |
| Opelika to Sivas | 6,225.04 mi (10,018.23 km) |
| Opelika to Sivasli | 5,993.85 mi (9,646.17 km) |
| Opelika to Siverek | 6,410.44 mi (10,316.60 km) |
| Opelika to Sivrice | 6,375.54 mi (10,260.44 km) |
| Opelika to Sivrihisar | 6,025.76 mi (9,697.52 km) |
| Opelika to Sogut | 5,945.55 mi (9,568.44 km) |
| Opelika to Sogutlu | 5,918.08 mi (9,524.22 km) |
| Opelika to Soke | 5,930.79 mi (9,544.69 km) |
| Opelika to Solhan | 6,413.70 mi (10,321.85 km) |
| Opelika to Soma | 5,876.76 mi (9,457.73 km) |
| Opelika to Sorgun | 6,152.31 mi (9,901.19 km) |
