| Flagstaff to Karlovo | 6,397.28 mi (10,295.43 km) |
| Flagstaff to Karnobat | 6,459.01 mi (10,394.77 km) |
| Flagstaff to Kavarna | 6,448.70 mi (10,378.18 km) |
| Flagstaff to Kazanlak | 6,415.72 mi (10,325.11 km) |
| Flagstaff to Knezha | 6,327.83 mi (10,183.65 km) |
| Flagstaff to Kostinbrod | 6,341.31 mi (10,205.35 km) |
| Flagstaff to Kozloduy | 6,301.76 mi (10,141.70 km) |
| Flagstaff to Kyustendil | 6,355.45 mi (10,228.10 km) |
| Flagstaff to Levski | 6,365.22 mi (10,243.84 km) |
| Flagstaff to Lom | 6,285.11 mi (10,114.90 km) |
| Flagstaff to Lovech | 6,366.70 mi (10,246.21 km) |
| Flagstaff to Lukovit | 6,347.24 mi (10,214.90 km) |
| Flagstaff to Lyaskovets | 6,396.89 mi (10,294.80 km) |
| Flagstaff to Mezdra | 6,336.61 mi (10,197.79 km) |
| Flagstaff to Momchilgrad | 6,478.32 mi (10,425.85 km) |
