| Flagstaff to Devnya | 6,440.93 mi (10,365.67 km) |
| Flagstaff to Dimitrovgrad | 6,453.93 mi (10,386.60 km) |
| Flagstaff to Dobrich | 6,427.61 mi (10,344.25 km) |
| Flagstaff to Dospat | 6,435.20 mi (10,356.45 km) |
| Flagstaff to Dupnitsa | 6,369.45 mi (10,250.63 km) |
| Flagstaff to Elhovo | 6,474.51 mi (10,419.72 km) |
| Flagstaff to Etropole | 6,363.23 mi (10,240.63 km) |
| Flagstaff to Gabrovo | 6,399.50 mi (10,299.00 km) |
| Flagstaff to Gorna Oryahovitsa | 6,394.51 mi (10,290.97 km) |
| Flagstaff to Gotse Delchev | 6,427.09 mi (10,343.40 km) |
| Flagstaff to Harmanli | 6,469.19 mi (10,411.15 km) |
| Flagstaff to Haskovo | 6,459.68 mi (10,395.85 km) |
| Flagstaff to Ihtiman | 6,380.30 mi (10,268.10 km) |
| Flagstaff to Isperih | 6,392.01 mi (10,286.94 km) |
| Flagstaff to Kardzhali | 6,470.19 mi (10,412.76 km) |
