| Valley Center to Devnya | 6,700.57 mi (10,783.52 km) |
| Valley Center to Dimitrovgrad | 6,720.35 mi (10,815.36 km) |
| Valley Center to Dobrich | 6,685.95 mi (10,760.00 km) |
| Valley Center to Dospat | 6,705.58 mi (10,791.60 km) |
| Valley Center to Dupnitsa | 6,640.91 mi (10,687.50 km) |
| Valley Center to Elhovo | 6,738.50 mi (10,844.56 km) |
| Valley Center to Etropole | 6,631.68 mi (10,672.66 km) |
| Valley Center to Gabrovo | 6,664.94 mi (10,726.19 km) |
| Valley Center to Gorna Oryahovitsa | 6,658.61 mi (10,716.00 km) |
| Valley Center to Gotse Delchev | 6,698.58 mi (10,780.32 km) |
| Valley Center to Harmanli | 6,735.15 mi (10,839.18 km) |
| Valley Center to Haskovo | 6,726.40 mi (10,825.10 km) |
| Valley Center to Ihtiman | 6,649.92 mi (10,702.01 km) |
| Valley Center to Isperih | 6,652.39 mi (10,705.98 km) |
| Valley Center to Kardzhali | 6,737.90 mi (10,843.61 km) |
