| Richland to Devnya | 5,928.43 mi (9,540.89 km) |
| Richland to Dimitrovgrad | 5,963.86 mi (9,597.90 km) |
| Richland to Dobrich | 5,911.09 mi (9,512.99 km) |
| Richland to Dospat | 5,959.22 mi (9,590.44 km) |
| Richland to Dupnitsa | 5,898.12 mi (9,492.11 km) |
| Richland to Elhovo | 5,975.94 mi (9,617.35 km) |
| Richland to Etropole | 5,881.25 mi (9,464.96 km) |
| Richland to Gabrovo | 5,906.70 mi (9,505.91 km) |
| Richland to Gorna Oryahovitsa | 5,897.22 mi (9,490.65 km) |
| Richland to Gotse Delchev | 5,955.18 mi (9,583.94 km) |
| Richland to Harmanli | 5,977.37 mi (9,619.65 km) |
| Richland to Haskovo | 5,970.57 mi (9,608.71 km) |
| Richland to Ihtiman | 5,902.26 mi (9,498.77 km) |
| Richland to Isperih | 5,882.44 mi (9,466.88 km) |
| Richland to Kardzhali | 5,984.40 mi (9,630.96 km) |
