| Letchworth to Rovinj | 791.10 mi (1,273.15 km) |
| Letchworth to Samobor | 838.22 mi (1,348.99 km) |
| Letchworth to Sesvete | 852.48 mi (1,371.93 km) |
| Letchworth to Sibenik | 936.16 mi (1,506.61 km) |
| Letchworth to Sinj | 965.07 mi (1,553.13 km) |
| Letchworth to Sisak | 876.68 mi (1,410.88 km) |
| Letchworth to Slatina | 920.09 mi (1,480.74 km) |
| Letchworth to Slavonski Brod | 953.97 mi (1,535.27 km) |
| Letchworth to Solin | 967.84 mi (1,557.58 km) |
| Letchworth to Split | 966.85 mi (1,556.00 km) |
| Letchworth to Sveti Ivan Zelina | 852.33 mi (1,371.68 km) |
| Letchworth to Trilj | 972.03 mi (1,564.33 km) |
| Letchworth to Trogir | 959.63 mi (1,544.38 km) |
| Letchworth to Umag | 770.85 mi (1,240.56 km) |
| Letchworth to Valpovo | 950.00 mi (1,528.88 km) |
