| Swansea to Devnya | 5,569.77 mi (8,963.67 km) |
| Swansea to Dimitrovgrad | 5,555.71 mi (8,941.05 km) |
| Swansea to Dobrich | 5,561.94 mi (8,951.08 km) |
| Swansea to Dospat | 5,521.76 mi (8,886.42 km) |
| Swansea to Dupnitsa | 5,453.42 mi (8,776.43 km) |
| Swansea to Elhovo | 5,585.33 mi (8,988.72 km) |
| Swansea to Etropole | 5,459.37 mi (8,786.01 km) |
| Swansea to Gabrovo | 5,506.62 mi (8,862.05 km) |
| Swansea to Gorna Oryahovitsa | 5,507.08 mi (8,862.80 km) |
| Swansea to Gotse Delchev | 5,509.46 mi (8,866.62 km) |
| Swansea to Harmanli | 5,572.35 mi (8,967.84 km) |
| Swansea to Haskovo | 5,560.12 mi (8,948.15 km) |
| Swansea to Ihtiman | 5,471.33 mi (8,805.25 km) |
| Swansea to Isperih | 5,519.34 mi (8,882.51 km) |
| Swansea to Kardzhali | 5,566.41 mi (8,958.27 km) |
