| Riom to Devnya | 1,213.20 mi (1,952.46 km) |
| Riom to Dimitrovgrad | 1,145.13 mi (1,842.91 km) |
| Riom to Dobrich | 1,219.06 mi (1,961.89 km) |
| Riom to Dospat | 1,086.98 mi (1,749.33 km) |
| Riom to Dupnitsa | 1,021.17 mi (1,643.41 km) |
| Riom to Elhovo | 1,188.60 mi (1,912.87 km) |
| Riom to Etropole | 1,049.99 mi (1,689.79 km) |
| Riom to Gabrovo | 1,113.25 mi (1,791.60 km) |
| Riom to Gorna Oryahovitsa | 1,125.17 mi (1,810.78 km) |
| Riom to Gotse Delchev | 1,068.62 mi (1,719.77 km) |
| Riom to Harmanli | 1,162.41 mi (1,870.72 km) |
| Riom to Haskovo | 1,146.46 mi (1,845.05 km) |
| Riom to Ihtiman | 1,050.32 mi (1,690.33 km) |
| Riom to Isperih | 1,168.14 mi (1,879.93 km) |
| Riom to Kardzhali | 1,144.20 mi (1,841.41 km) |
