| Port Royal to Devnya | 5,528.16 mi (8,896.71 km) |
| Port Royal to Dimitrovgrad | 5,492.40 mi (8,839.17 km) |
| Port Royal to Dobrich | 5,525.01 mi (8,891.64 km) |
| Port Royal to Dospat | 5,446.77 mi (8,765.73 km) |
| Port Royal to Dupnitsa | 5,378.43 mi (8,655.74 km) |
| Port Royal to Elhovo | 5,528.53 mi (8,897.32 km) |
| Port Royal to Etropole | 5,394.51 mi (8,681.62 km) |
| Port Royal to Gabrovo | 5,449.37 mi (8,769.91 km) |
| Port Royal to Gorna Oryahovitsa | 5,454.32 mi (8,777.87 km) |
| Port Royal to Gotse Delchev | 5,431.29 mi (8,740.82 km) |
| Port Royal to Harmanli | 5,509.67 mi (8,866.95 km) |
| Port Royal to Haskovo | 5,495.55 mi (8,844.24 km) |
| Port Royal to Ihtiman | 5,401.75 mi (8,693.28 km) |
| Port Royal to Isperih | 5,478.19 mi (8,816.30 km) |
| Port Royal to Kardzhali | 5,498.12 mi (8,848.36 km) |
