| Clay to Devnya | 5,696.03 mi (9,166.88 km) |
| Clay to Dimitrovgrad | 5,670.14 mi (9,125.20 km) |
| Clay to Dobrich | 5,690.70 mi (9,158.29 km) |
| Clay to Dospat | 5,629.65 mi (9,060.05 km) |
| Clay to Dupnitsa | 5,561.06 mi (8,949.66 km) |
| Clay to Elhovo | 5,703.42 mi (9,178.76 km) |
| Clay to Etropole | 5,572.59 mi (8,968.22 km) |
| Clay to Gabrovo | 5,624.17 mi (9,051.23 km) |
| Clay to Gorna Oryahovitsa | 5,627.07 mi (9,055.90 km) |
| Clay to Gotse Delchev | 5,615.56 mi (9,037.37 km) |
| Clay to Harmanli | 5,687.18 mi (9,152.63 km) |
| Clay to Haskovo | 5,673.87 mi (9,131.22 km) |
| Clay to Ihtiman | 5,582.01 mi (8,983.37 km) |
| Clay to Isperih | 5,645.66 mi (9,085.82 km) |
| Clay to Kardzhali | 5,678.15 mi (9,138.09 km) |
