| Allen to Devnya | 6,097.39 mi (9,812.80 km) |
| Allen to Dimitrovgrad | 6,084.83 mi (9,792.59 km) |
| Allen to Dobrich | 6,089.18 mi (9,799.59 km) |
| Allen to Dospat | 6,051.48 mi (9,738.92 km) |
| Allen to Dupnitsa | 5,983.18 mi (9,629.00 km) |
| Allen to Elhovo | 6,114.03 mi (9,839.59 km) |
| Allen to Etropole | 5,988.66 mi (9,637.82 km) |
| Allen to Gabrovo | 6,035.44 mi (9,713.10 km) |
| Allen to Gorna Oryahovitsa | 6,035.61 mi (9,713.37 km) |
| Allen to Gotse Delchev | 6,039.32 mi (9,719.34 km) |
| Allen to Harmanli | 6,101.43 mi (9,819.30 km) |
| Allen to Haskovo | 6,089.31 mi (9,799.80 km) |
| Allen to Ihtiman | 6,000.84 mi (9,657.42 km) |
| Allen to Isperih | 6,046.98 mi (9,731.68 km) |
| Allen to Kardzhali | 6,095.79 mi (9,810.23 km) |
