| Sierra Vista to Devnya | 6,623.60 mi (10,659.66 km) |
| Sierra Vista to Dimitrovgrad | 6,630.44 mi (10,670.67 km) |
| Sierra Vista to Dobrich | 6,611.45 mi (10,640.10 km) |
| Sierra Vista to Dospat | 6,607.96 mi (10,634.49 km) |
| Sierra Vista to Dupnitsa | 6,541.32 mi (10,527.23 km) |
| Sierra Vista to Elhovo | 6,653.22 mi (10,707.33 km) |
| Sierra Vista to Etropole | 6,538.04 mi (10,521.96 km) |
| Sierra Vista to Gabrovo | 6,577.06 mi (10,584.76 km) |
| Sierra Vista to Gorna Oryahovitsa | 6,573.32 mi (10,578.73 km) |
| Sierra Vista to Gotse Delchev | 6,598.78 mi (10,619.71 km) |
| Sierra Vista to Harmanli | 6,646.09 mi (10,695.84 km) |
| Sierra Vista to Haskovo | 6,635.90 mi (10,679.44 km) |
| Sierra Vista to Ihtiman | 6,553.94 mi (10,547.55 km) |
| Sierra Vista to Isperih | 6,574.15 mi (10,580.07 km) |
| Sierra Vista to Kardzhali | 6,645.43 mi (10,694.79 km) |
