| Oro Valley to Karlovo | 6,542.72 mi (10,529.49 km) |
| Oro Valley to Karnobat | 6,607.38 mi (10,633.55 km) |
| Oro Valley to Kavarna | 6,599.82 mi (10,621.39 km) |
| Oro Valley to Kazanlak | 6,561.93 mi (10,560.40 km) |
| Oro Valley to Knezha | 6,473.41 mi (10,417.95 km) |
| Oro Valley to Kostinbrod | 6,484.81 mi (10,436.30 km) |
| Oro Valley to Kozloduy | 6,447.26 mi (10,375.86 km) |
| Oro Valley to Kyustendil | 6,497.49 mi (10,456.69 km) |
| Oro Valley to Levski | 6,512.03 mi (10,480.10 km) |
| Oro Valley to Lom | 6,430.01 mi (10,348.10 km) |
| Oro Valley to Lovech | 6,512.65 mi (10,481.10 km) |
| Oro Valley to Lukovit | 6,492.54 mi (10,448.74 km) |
| Oro Valley to Lyaskovets | 6,544.14 mi (10,531.78 km) |
| Oro Valley to Mezdra | 6,481.22 mi (10,430.51 km) |
| Oro Valley to Momchilgrad | 6,623.15 mi (10,658.92 km) |
