| University of California-Santa Barbara to Karlovo | 6,663.34 mi (10,723.62 km) |
| University of California-Santa Barbara to Karnobat | 6,715.69 mi (10,807.86 km) |
| University of California-Santa Barbara to Kavarna | 6,696.67 mi (10,777.25 km) |
| University of California-Santa Barbara to Kazanlak | 6,679.35 mi (10,749.37 km) |
| University of California-Santa Barbara to Knezha | 6,593.88 mi (10,611.83 km) |
| University of California-Santa Barbara to Kostinbrod | 6,613.43 mi (10,643.28 km) |
| University of California-Santa Barbara to Kozloduy | 6,568.25 mi (10,570.57 km) |
| University of California-Santa Barbara to Kyustendil | 6,631.71 mi (10,672.70 km) |
| University of California-Santa Barbara to Levski | 6,627.34 mi (10,665.67 km) |
| University of California-Santa Barbara to Lom | 6,553.48 mi (10,546.81 km) |
| University of California-Santa Barbara to Lovech | 6,631.40 mi (10,672.20 km) |
| University of California-Santa Barbara to Lukovit | 6,614.02 mi (10,644.24 km) |
| University of California-Santa Barbara to Lyaskovets | 6,657.45 mi (10,714.14 km) |
| University of California-Santa Barbara to Mezdra | 6,605.52 mi (10,630.56 km) |
| University of California-Santa Barbara to Momchilgrad | 6,745.67 mi (10,856.11 km) |
