| Riverside to Karlovo | 6,630.89 mi (10,671.39 km) |
| Riverside to Karnobat | 6,686.70 mi (10,761.21 km) |
| Riverside to Kavarna | 6,670.79 mi (10,735.60 km) |
| Riverside to Kazanlak | 6,647.80 mi (10,698.60 km) |
| Riverside to Knezha | 6,561.36 mi (10,559.49 km) |
| Riverside to Kostinbrod | 6,578.71 mi (10,587.40 km) |
| Riverside to Kozloduy | 6,535.54 mi (10,517.93 km) |
| Riverside to Kyustendil | 6,595.48 mi (10,614.40 km) |
| Riverside to Levski | 6,596.28 mi (10,615.69 km) |
| Riverside to Lom | 6,520.07 mi (10,493.03 km) |
| Riverside to Lovech | 6,599.41 mi (10,620.72 km) |
| Riverside to Lukovit | 6,581.26 mi (10,591.51 km) |
| Riverside to Lyaskovets | 6,627.00 mi (10,665.12 km) |
| Riverside to Mezdra | 6,571.97 mi (10,576.56 km) |
| Riverside to Momchilgrad | 6,712.84 mi (10,803.28 km) |
