| South River to Devnya | 4,889.44 mi (7,868.79 km) |
| South River to Dimitrovgrad | 4,859.41 mi (7,820.47 km) |
| South River to Dobrich | 4,885.11 mi (7,861.83 km) |
| South River to Dospat | 4,817.07 mi (7,752.33 km) |
| South River to Dupnitsa | 4,748.51 mi (7,641.99 km) |
| South River to Elhovo | 4,893.83 mi (7,875.85 km) |
| South River to Etropole | 4,761.66 mi (7,663.16 km) |
| South River to Gabrovo | 4,814.55 mi (7,748.27 km) |
| South River to Gorna Oryahovitsa | 4,818.29 mi (7,754.29 km) |
| South River to Gotse Delchev | 4,802.51 mi (7,728.90 km) |
| South River to Harmanli | 4,876.55 mi (7,848.05 km) |
| South River to Haskovo | 4,862.93 mi (7,826.14 km) |
| South River to Ihtiman | 4,770.30 mi (7,677.05 km) |
| South River to Isperih | 4,839.22 mi (7,787.97 km) |
| South River to Kardzhali | 4,866.58 mi (7,832.01 km) |
