| Portalegre to Devnya | 1,823.16 mi (2,934.10 km) |
| Portalegre to Dimitrovgrad | 1,729.38 mi (2,783.16 km) |
| Portalegre to Dobrich | 1,835.13 mi (2,953.36 km) |
| Portalegre to Dospat | 1,658.26 mi (2,668.71 km) |
| Portalegre to Dupnitsa | 1,601.56 mi (2,577.46 km) |
| Portalegre to Elhovo | 1,778.03 mi (2,861.47 km) |
| Portalegre to Etropole | 1,644.58 mi (2,646.70 km) |
| Portalegre to Gabrovo | 1,711.95 mi (2,755.11 km) |
| Portalegre to Gorna Oryahovitsa | 1,729.55 mi (2,783.45 km) |
| Portalegre to Gotse Delchev | 1,636.45 mi (2,633.62 km) |
| Portalegre to Harmanli | 1,745.44 mi (2,809.01 km) |
| Portalegre to Haskovo | 1,728.37 mi (2,781.55 km) |
| Portalegre to Ihtiman | 1,636.52 mi (2,633.72 km) |
| Portalegre to Isperih | 1,784.72 mi (2,872.23 km) |
| Portalegre to Kardzhali | 1,719.95 mi (2,767.98 km) |
