| Catonsville to Karlovo | 4,950.93 mi (7,967.75 km) |
| Catonsville to Karnobat | 5,039.08 mi (8,109.61 km) |
| Catonsville to Kavarna | 5,058.20 mi (8,140.39 km) |
| Catonsville to Kazanlak | 4,976.08 mi (8,008.23 km) |
| Catonsville to Knezha | 4,886.30 mi (7,863.74 km) |
| Catonsville to Kostinbrod | 4,878.93 mi (7,851.88 km) |
| Catonsville to Kozloduy | 4,860.62 mi (7,822.41 km) |
| Catonsville to Kyustendil | 4,878.63 mi (7,851.39 km) |
| Catonsville to Levski | 4,934.08 mi (7,940.63 km) |
| Catonsville to Lom | 4,838.88 mi (7,787.43 km) |
| Catonsville to Lovech | 4,926.93 mi (7,929.13 km) |
| Catonsville to Lukovit | 4,901.97 mi (7,888.96 km) |
| Catonsville to Lyaskovets | 4,968.61 mi (7,996.21 km) |
| Catonsville to Mezdra | 4,885.08 mi (7,861.77 km) |
| Catonsville to Momchilgrad | 5,022.25 mi (8,082.52 km) |
