| Clayton to Devnya | 1,514.97 mi (2,438.10 km) |
| Clayton to Dimitrovgrad | 1,491.72 mi (2,400.69 km) |
| Clayton to Dobrich | 1,510.30 mi (2,430.60 km) |
| Clayton to Dospat | 1,456.80 mi (2,344.50 km) |
| Clayton to Dupnitsa | 1,388.52 mi (2,234.60 km) |
| Clayton to Elhovo | 1,523.19 mi (2,451.34 km) |
| Clayton to Etropole | 1,394.90 mi (2,244.87 km) |
| Clayton to Gabrovo | 1,444.08 mi (2,324.02 km) |
| Clayton to Gorna Oryahovitsa | 1,446.18 mi (2,327.41 km) |
| Clayton to Gotse Delchev | 1,444.77 mi (2,325.13 km) |
| Clayton to Harmanli | 1,508.54 mi (2,427.76 km) |
| Clayton to Haskovo | 1,495.90 mi (2,407.42 km) |
| Clayton to Ihtiman | 1,406.39 mi (2,263.36 km) |
| Clayton to Isperih | 1,464.66 mi (2,357.15 km) |
| Clayton to Kardzhali | 1,501.67 mi (2,416.71 km) |
