| Louth to Devnya | 1,435.64 mi (2,310.43 km) |
| Louth to Dimitrovgrad | 1,412.24 mi (2,272.78 km) |
| Louth to Dobrich | 1,431.08 mi (2,303.11 km) |
| Louth to Dospat | 1,377.52 mi (2,216.90 km) |
| Louth to Dupnitsa | 1,309.26 mi (2,107.05 km) |
| Louth to Elhovo | 1,443.69 mi (2,323.40 km) |
| Louth to Etropole | 1,315.44 mi (2,117.00 km) |
| Louth to Gabrovo | 1,364.58 mi (2,196.07 km) |
| Louth to Gorna Oryahovitsa | 1,366.70 mi (2,199.49 km) |
| Louth to Gotse Delchev | 1,365.57 mi (2,197.68 km) |
| Louth to Harmanli | 1,429.05 mi (2,299.84 km) |
| Louth to Haskovo | 1,416.43 mi (2,279.53 km) |
| Louth to Ihtiman | 1,327.00 mi (2,135.60 km) |
| Louth to Isperih | 1,385.35 mi (2,229.50 km) |
| Louth to Kardzhali | 1,422.25 mi (2,288.88 km) |
