| Letchworth to Montana | 1,233.23 mi (1,984.69 km) |
| Letchworth to Nova Zagora | 1,384.07 mi (2,227.44 km) |
| Letchworth to Novi Iskar | 1,263.96 mi (2,034.15 km) |
| Letchworth to Novi Pazar | 1,397.60 mi (2,249.21 km) |
| Letchworth to Omurtag | 1,375.41 mi (2,213.50 km) |
| Letchworth to Panagyurishte | 1,310.03 mi (2,108.30 km) |
| Letchworth to Parvomay | 1,368.56 mi (2,202.49 km) |
| Letchworth to Pavlikeni | 1,324.91 mi (2,132.24 km) |
| Letchworth to Pazardzhik | 1,328.97 mi (2,138.77 km) |
| Letchworth to Pernik | 1,260.03 mi (2,027.82 km) |
| Letchworth to Peshtera | 1,334.93 mi (2,148.36 km) |
| Letchworth to Petrich | 1,320.65 mi (2,125.38 km) |
| Letchworth to Pleven | 1,289.69 mi (2,075.56 km) |
| Letchworth to Plovdiv | 1,347.75 mi (2,168.99 km) |
| Letchworth to Pomorie | 1,446.17 mi (2,327.39 km) |
