| Piqua to Senftenberg | 4,430.64 mi (7,130.43 km) |
| Piqua to Siegburg | 4,202.59 mi (6,763.41 km) |
| Piqua to Siegen | 4,230.78 mi (6,808.77 km) |
| Piqua to Sigmaringen | 4,374.97 mi (7,040.83 km) |
| Piqua to Simbach am Inn | 4,516.11 mi (7,267.97 km) |
| Piqua to Simmerath | 4,174.55 mi (6,718.29 km) |
| Piqua to Sindelfingen | 4,344.18 mi (6,991.28 km) |
| Piqua to Sinsheim | 4,320.53 mi (6,953.21 km) |
| Piqua to Sinzheim | 4,309.72 mi (6,935.82 km) |
| Piqua to Sinzig | 4,212.99 mi (6,780.15 km) |
| Piqua to Soest | 4,211.04 mi (6,777.02 km) |
| Piqua to Solingen | 4,185.81 mi (6,736.40 km) |
| Piqua to Soltau | 4,226.83 mi (6,802.42 km) |
| Piqua to Sommerda | 4,337.44 mi (6,980.44 km) |
| Piqua to Sondershausen | 4,320.87 mi (6,953.78 km) |
