| Penkridge to Devnya | 1,507.75 mi (2,426.49 km) |
| Penkridge to Dimitrovgrad | 1,478.20 mi (2,378.94 km) |
| Penkridge to Dobrich | 1,504.46 mi (2,421.19 km) |
| Penkridge to Dospat | 1,439.76 mi (2,317.07 km) |
| Penkridge to Dupnitsa | 1,371.22 mi (2,206.77 km) |
| Penkridge to Elhovo | 1,511.58 mi (2,432.66 km) |
| Penkridge to Etropole | 1,380.76 mi (2,222.12 km) |
| Penkridge to Gabrovo | 1,432.31 mi (2,305.09 km) |
| Penkridge to Gorna Oryahovitsa | 1,435.77 mi (2,310.65 km) |
| Penkridge to Gotse Delchev | 1,426.73 mi (2,296.11 km) |
| Penkridge to Harmanli | 1,495.22 mi (2,406.33 km) |
| Penkridge to Haskovo | 1,482.02 mi (2,385.08 km) |
| Penkridge to Ihtiman | 1,390.82 mi (2,238.31 km) |
| Penkridge to Isperih | 1,457.71 mi (2,345.96 km) |
| Penkridge to Kardzhali | 1,486.72 mi (2,392.65 km) |
