| Letchworth to Beocin | 1,020.92 mi (1,643.01 km) |
| Letchworth to Blace | 1,161.20 mi (1,868.78 km) |
| Letchworth to Bogatic | 1,025.51 mi (1,650.39 km) |
| Letchworth to Bojnik | 1,190.19 mi (1,915.43 km) |
| Letchworth to Boljevac | 1,165.10 mi (1,875.05 km) |
| Letchworth to Bor | 1,158.70 mi (1,864.75 km) |
| Letchworth to Borca | 1,062.67 mi (1,710.20 km) |
| Letchworth to Bosilegrad | 1,242.30 mi (1,999.30 km) |
| Letchworth to Brus | 1,147.33 mi (1,846.46 km) |
| Letchworth to Bujanovac | 1,216.22 mi (1,957.32 km) |
| Letchworth to Cacak | 1,098.76 mi (1,768.29 km) |
| Letchworth to Cajetina | 1,080.04 mi (1,738.16 km) |
| Letchworth to Cicevac | 1,149.61 mi (1,850.11 km) |
| Letchworth to Coka | 1,010.10 mi (1,625.60 km) |
| Letchworth to Crna Trava | 1,221.92 mi (1,966.48 km) |
