| Irthlingborough to Sunbury | 62.78 mi (101.03 km) |
| Irthlingborough to Sunderland | 181.14 mi (291.52 km) |
| Irthlingborough to Sunninghill | 63.69 mi (102.50 km) |
| Irthlingborough to Surbiton | 65.58 mi (105.54 km) |
| Irthlingborough to Sutton | 68.58 mi (110.36 km) |
| Irthlingborough to Sutton Coldfield | 53.49 mi (86.08 km) |
| Irthlingborough to Sutton in Ashfield | 61.61 mi (99.15 km) |
| Irthlingborough to Sutton on Hull | 101.46 mi (163.28 km) |
| Irthlingborough to Swadlincote | 50.36 mi (81.05 km) |
| Irthlingborough to Swallownest | 77.63 mi (124.94 km) |
| Irthlingborough to Swanage | 131.96 mi (212.36 km) |
| Irthlingborough to Swindon | 72.48 mi (116.64 km) |
| Irthlingborough to Swinton | 85.54 mi (137.67 km) |
| Irthlingborough to Swinton | 109.16 mi (175.68 km) |
| Irthlingborough to Syston | 32.54 mi (52.37 km) |
