| Irthlingborough to Senftenberg | 624.88 mi (1,005.65 km) |
| Irthlingborough to Siegburg | 351.70 mi (566.01 km) |
| Irthlingborough to Siegen | 383.26 mi (616.79 km) |
| Irthlingborough to Sigmaringen | 523.42 mi (842.36 km) |
| Irthlingborough to Simbach am Inn | 662.38 mi (1,065.99 km) |
| Irthlingborough to Simmerath | 320.41 mi (515.65 km) |
| Irthlingborough to Sindelfingen | 490.06 mi (788.67 km) |
| Irthlingborough to Sinsheim | 465.56 mi (749.25 km) |
| Irthlingborough to Sinzheim | 456.94 mi (735.38 km) |
| Irthlingborough to Sinzig | 360.18 mi (579.66 km) |
| Irthlingborough to Soest | 374.89 mi (603.33 km) |
| Irthlingborough to Solingen | 338.68 mi (545.05 km) |
| Irthlingborough to Soltau | 439.86 mi (707.88 km) |
| Irthlingborough to Sommerda | 507.67 mi (817.02 km) |
| Irthlingborough to Sondershausen | 493.96 mi (794.95 km) |
