| Opelika to Senftenberg | 4,857.91 mi (7,818.04 km) |
| Opelika to Siegburg | 4,614.06 mi (7,425.62 km) |
| Opelika to Siegen | 4,644.13 mi (7,474.00 km) |
| Opelika to Sigmaringen | 4,775.09 mi (7,684.77 km) |
| Opelika to Simbach am Inn | 4,925.05 mi (7,926.09 km) |
| Opelika to Simmerath | 4,583.31 mi (7,376.13 km) |
| Opelika to Sindelfingen | 4,747.37 mi (7,640.15 km) |
| Opelika to Sinsheim | 4,726.46 mi (7,606.50 km) |
| Opelika to Sinzheim | 4,711.53 mi (7,582.47 km) |
| Opelika to Sinzig | 4,623.12 mi (7,440.19 km) |
| Opelika to Soest | 4,628.31 mi (7,448.55 km) |
| Opelika to Solingen | 4,599.11 mi (7,401.55 km) |
| Opelika to Soltau | 4,654.39 mi (7,490.51 km) |
| Opelika to Sommerda | 4,757.76 mi (7,656.87 km) |
| Opelika to Sondershausen | 4,741.81 mi (7,631.20 km) |
