| Ludlow to Devnya | 1,526.78 mi (2,457.12 km) |
| Ludlow to Dimitrovgrad | 1,494.64 mi (2,405.38 km) |
| Ludlow to Dobrich | 1,524.04 mi (2,452.70 km) |
| Ludlow to Dospat | 1,454.68 mi (2,341.09 km) |
| Ludlow to Dupnitsa | 1,386.10 mi (2,230.71 km) |
| Ludlow to Elhovo | 1,528.80 mi (2,460.37 km) |
| Ludlow to Etropole | 1,397.01 mi (2,248.27 km) |
| Ludlow to Gabrovo | 1,449.53 mi (2,332.79 km) |
| Ludlow to Gorna Oryahovitsa | 1,453.55 mi (2,339.26 km) |
| Ludlow to Gotse Delchev | 1,441.23 mi (2,319.43 km) |
| Ludlow to Harmanli | 1,511.73 mi (2,432.89 km) |
| Ludlow to Haskovo | 1,498.30 mi (2,411.27 km) |
| Ludlow to Ihtiman | 1,406.44 mi (2,263.44 km) |
| Ludlow to Isperih | 1,476.88 mi (2,376.81 km) |
| Ludlow to Kardzhali | 1,502.53 mi (2,418.09 km) |
