| Porto to Devnya | 1,843.58 mi (2,966.95 km) |
| Porto to Dimitrovgrad | 1,757.22 mi (2,827.98 km) |
| Porto to Dobrich | 1,853.53 mi (2,982.97 km) |
| Porto to Dospat | 1,689.21 mi (2,718.52 km) |
| Porto to Dupnitsa | 1,629.36 mi (2,622.20 km) |
| Porto to Elhovo | 1,804.71 mi (2,904.40 km) |
| Porto to Etropole | 1,668.58 mi (2,685.32 km) |
| Porto to Gabrovo | 1,735.24 mi (2,792.59 km) |
| Porto to Gorna Oryahovitsa | 1,751.17 mi (2,818.23 km) |
| Porto to Gotse Delchev | 1,668.14 mi (2,684.62 km) |
| Porto to Harmanli | 1,773.78 mi (2,854.62 km) |
| Porto to Haskovo | 1,756.90 mi (2,827.46 km) |
| Porto to Ihtiman | 1,662.97 mi (2,676.29 km) |
| Porto to Isperih | 1,802.63 mi (2,901.05 km) |
| Porto to Kardzhali | 1,750.20 mi (2,816.67 km) |
