| Towcester to Sudbury | 73.20 mi (117.81 km) |
| Towcester to Sunbury | 54.51 mi (87.73 km) |
| Towcester to Sunderland | 192.47 mi (309.76 km) |
| Towcester to Sunninghill | 52.27 mi (84.11 km) |
| Towcester to Surbiton | 58.64 mi (94.38 km) |
| Towcester to Sutton | 62.79 mi (101.04 km) |
| Towcester to Sutton Coldfield | 46.13 mi (74.24 km) |
| Towcester to Sutton in Ashfield | 69.68 mi (112.14 km) |
| Towcester to Sutton on Hull | 117.56 mi (189.19 km) |
| Towcester to Swadlincote | 50.50 mi (81.27 km) |
| Towcester to Swallownest | 86.29 mi (138.87 km) |
| Towcester to Swanage | 113.18 mi (182.14 km) |
| Towcester to Swindon | 51.85 mi (83.44 km) |
| Towcester to Swinton | 94.78 mi (152.54 km) |
| Towcester to Swinton | 110.92 mi (178.50 km) |
