| Portsmouth to Devnya | 1,437.00 mi (2,312.62 km) |
| Portsmouth to Dimitrovgrad | 1,397.25 mi (2,248.66 km) |
| Portsmouth to Dobrich | 1,436.03 mi (2,311.06 km) |
| Portsmouth to Dospat | 1,353.39 mi (2,178.06 km) |
| Portsmouth to Dupnitsa | 1,284.84 mi (2,067.74 km) |
| Portsmouth to Elhovo | 1,433.55 mi (2,307.07 km) |
| Portsmouth to Etropole | 1,299.36 mi (2,091.12 km) |
| Portsmouth to Gabrovo | 1,354.47 mi (2,179.80 km) |
| Portsmouth to Gorna Oryahovitsa | 1,360.12 mi (2,188.90 km) |
| Portsmouth to Gotse Delchev | 1,338.87 mi (2,154.70 km) |
| Portsmouth to Harmanli | 1,414.50 mi (2,276.42 km) |
| Portsmouth to Haskovo | 1,400.47 mi (2,253.83 km) |
| Portsmouth to Ihtiman | 1,307.07 mi (2,103.52 km) |
| Portsmouth to Isperih | 1,387.69 mi (2,233.27 km) |
| Portsmouth to Kardzhali | 1,403.42 mi (2,258.59 km) |
