| Harlow to Devnya | 1,399.82 mi (2,252.79 km) |
| Harlow to Dimitrovgrad | 1,367.12 mi (2,200.16 km) |
| Harlow to Dobrich | 1,397.33 mi (2,248.79 km) |
| Harlow to Dospat | 1,327.28 mi (2,136.05 km) |
| Harlow to Dupnitsa | 1,258.70 mi (2,025.68 km) |
| Harlow to Elhovo | 1,401.34 mi (2,255.24 km) |
| Harlow to Etropole | 1,269.49 mi (2,043.04 km) |
| Harlow to Gabrovo | 1,322.07 mi (2,127.67 km) |
| Harlow to Gorna Oryahovitsa | 1,326.20 mi (2,134.31 km) |
| Harlow to Gotse Delchev | 1,313.91 mi (2,114.54 km) |
| Harlow to Harmanli | 1,384.21 mi (2,227.67 km) |
| Harlow to Haskovo | 1,370.77 mi (2,206.05 km) |
| Harlow to Ihtiman | 1,278.94 mi (2,058.26 km) |
| Harlow to Isperih | 1,349.99 mi (2,172.60 km) |
| Harlow to Kardzhali | 1,375.02 mi (2,212.88 km) |
