| Irthlingborough to Rovinj | 817.53 mi (1,315.69 km) |
| Irthlingborough to Samobor | 862.99 mi (1,388.84 km) |
| Irthlingborough to Sesvete | 877.02 mi (1,411.42 km) |
| Irthlingborough to Sibenik | 962.49 mi (1,548.98 km) |
| Irthlingborough to Sinj | 991.10 mi (1,595.02 km) |
| Irthlingborough to Sisak | 901.41 mi (1,450.68 km) |
| Irthlingborough to Slatina | 943.96 mi (1,519.15 km) |
| Irthlingborough to Slavonski Brod | 978.20 mi (1,574.26 km) |
| Irthlingborough to Solin | 994.03 mi (1,599.74 km) |
| Irthlingborough to Split | 993.09 mi (1,598.22 km) |
| Irthlingborough to Sveti Ivan Zelina | 876.66 mi (1,410.85 km) |
| Irthlingborough to Trilj | 998.07 mi (1,606.24 km) |
| Irthlingborough to Trogir | 985.94 mi (1,586.72 km) |
| Irthlingborough to Umag | 797.07 mi (1,282.76 km) |
| Irthlingborough to Valpovo | 973.56 mi (1,566.79 km) |
