| Porthcawl to Devnya | 1,556.05 mi (2,504.21 km) |
| Porthcawl to Dimitrovgrad | 1,518.15 mi (2,443.23 km) |
| Porthcawl to Dobrich | 1,554.55 mi (2,501.80 km) |
| Porthcawl to Dospat | 1,474.94 mi (2,373.69 km) |
| Porthcawl to Dupnitsa | 1,406.37 mi (2,263.34 km) |
| Porthcawl to Elhovo | 1,554.01 mi (2,500.94 km) |
| Porthcawl to Etropole | 1,420.29 mi (2,285.73 km) |
| Porthcawl to Gabrovo | 1,474.86 mi (2,373.56 km) |
| Porthcawl to Gorna Oryahovitsa | 1,480.13 mi (2,382.03 km) |
| Porthcawl to Gotse Delchev | 1,460.56 mi (2,350.54 km) |
| Porthcawl to Harmanli | 1,535.38 mi (2,470.95 km) |
| Porthcawl to Haskovo | 1,521.46 mi (2,448.55 km) |
| Porthcawl to Ihtiman | 1,428.31 mi (2,298.65 km) |
| Porthcawl to Isperih | 1,506.54 mi (2,424.55 km) |
| Porthcawl to Kardzhali | 1,524.65 mi (2,453.68 km) |
