| Irthlingborough to Sucha Beskidzka | 892.69 mi (1,436.65 km) |
| Irthlingborough to Suchanino | 802.58 mi (1,291.63 km) |
| Irthlingborough to Sulechow | 686.04 mi (1,104.07 km) |
| Irthlingborough to Sulecin | 661.90 mi (1,065.23 km) |
| Irthlingborough to Sulejowek | 921.88 mi (1,483.63 km) |
| Irthlingborough to Suwalki | 977.19 mi (1,572.64 km) |
| Irthlingborough to Swarzedz | 744.29 mi (1,197.83 km) |
| Irthlingborough to Swidnica | 739.23 mi (1,189.68 km) |
| Irthlingborough to Swidnik | 995.40 mi (1,601.94 km) |
| Irthlingborough to Swidwin | 686.14 mi (1,104.23 km) |
| Irthlingborough to Swiebodzice | 732.61 mi (1,179.02 km) |
| Irthlingborough to Swiecie | 795.57 mi (1,280.35 km) |
| Irthlingborough to Swiedbodzin | 681.06 mi (1,096.07 km) |
| Irthlingborough to Swietochlowice | 852.52 mi (1,372.00 km) |
| Irthlingborough to Swinoujscie | 624.87 mi (1,005.64 km) |
