| Riga to Karlovo | 988.88 mi (1,591.45 km) |
| Riga to Karnobat | 997.18 mi (1,604.80 km) |
| Riga to Kavarna | 951.91 mi (1,531.96 km) |
| Riga to Kazanlak | 991.89 mi (1,596.30 km) |
| Riga to Knezha | 929.23 mi (1,495.45 km) |
| Riga to Kostinbrod | 977.22 mi (1,572.69 km) |
| Riga to Kozloduy | 909.80 mi (1,464.18 km) |
| Riga to Kyustendil | 1,015.24 mi (1,633.87 km) |
| Riga to Levski | 939.51 mi (1,512.00 km) |
| Riga to Lom | 907.52 mi (1,460.51 km) |
| Riga to Lovech | 954.84 mi (1,536.67 km) |
| Riga to Lukovit | 949.96 mi (1,528.81 km) |
| Riga to Lyaskovets | 959.46 mi (1,544.11 km) |
| Riga to Mezdra | 953.58 mi (1,534.64 km) |
| Riga to Momchilgrad | 1,066.70 mi (1,716.69 km) |
