| Willowbrook to Karlovo | 6,653.60 mi (10,707.94 km) |
| Willowbrook to Karnobat | 6,708.37 mi (10,796.07 km) |
| Willowbrook to Kavarna | 6,691.50 mi (10,768.94 km) |
| Willowbrook to Kazanlak | 6,670.24 mi (10,734.71 km) |
| Willowbrook to Knezha | 6,584.08 mi (10,596.05 km) |
| Willowbrook to Kostinbrod | 6,602.09 mi (10,625.04 km) |
| Willowbrook to Kozloduy | 6,558.31 mi (10,554.58 km) |
| Willowbrook to Kyustendil | 6,619.32 mi (10,652.76 km) |
| Willowbrook to Levski | 6,618.56 mi (10,651.55 km) |
| Willowbrook to Lom | 6,543.05 mi (10,530.02 km) |
| Willowbrook to Lovech | 6,621.97 mi (10,657.03 km) |
| Willowbrook to Lukovit | 6,604.05 mi (10,628.20 km) |
| Willowbrook to Lyaskovets | 6,649.10 mi (10,700.69 km) |
| Willowbrook to Mezdra | 6,595.00 mi (10,613.62 km) |
| Willowbrook to Momchilgrad | 6,735.68 mi (10,840.03 km) |
