| Hartlepool to Devnya | 1,511.44 mi (2,432.42 km) |
| Hartlepool to Dimitrovgrad | 1,494.01 mi (2,404.37 km) |
| Hartlepool to Dobrich | 1,505.54 mi (2,422.93 km) |
| Hartlepool to Dospat | 1,462.42 mi (2,353.53 km) |
| Hartlepool to Dupnitsa | 1,394.53 mi (2,244.27 km) |
| Hartlepool to Elhovo | 1,523.66 mi (2,452.09 km) |
| Hartlepool to Etropole | 1,397.98 mi (2,249.84 km) |
| Hartlepool to Gabrovo | 1,444.86 mi (2,325.28 km) |
| Hartlepool to Gorna Oryahovitsa | 1,445.73 mi (2,326.67 km) |
| Hartlepool to Gotse Delchev | 1,451.33 mi (2,335.68 km) |
| Hartlepool to Harmanli | 1,510.61 mi (2,431.08 km) |
| Hartlepool to Haskovo | 1,498.51 mi (2,411.62 km) |
| Hartlepool to Ihtiman | 1,410.75 mi (2,270.39 km) |
| Hartlepool to Isperih | 1,461.01 mi (2,351.26 km) |
| Hartlepool to Kardzhali | 1,505.26 mi (2,422.48 km) |
