| Riverdale to Karlovo | 5,530.95 mi (8,901.21 km) |
| Riverdale to Karnobat | 5,618.98 mi (9,042.87 km) |
| Riverdale to Kavarna | 5,637.69 mi (9,072.98 km) |
| Riverdale to Kazanlak | 5,556.09 mi (8,941.67 km) |
| Riverdale to Knezha | 5,466.30 mi (8,797.16 km) |
| Riverdale to Kostinbrod | 5,458.95 mi (8,785.32 km) |
| Riverdale to Kozloduy | 5,440.61 mi (8,755.81 km) |
| Riverdale to Kyustendil | 5,458.55 mi (8,784.69 km) |
| Riverdale to Levski | 5,514.02 mi (8,873.96 km) |
| Riverdale to Lom | 5,418.89 mi (8,720.86 km) |
| Riverdale to Lovech | 5,506.93 mi (8,862.55 km) |
| Riverdale to Lukovit | 5,481.99 mi (8,822.41 km) |
| Riverdale to Lyaskovets | 5,548.55 mi (8,929.53 km) |
| Riverdale to Mezdra | 5,465.10 mi (8,795.23 km) |
| Riverdale to Momchilgrad | 5,602.25 mi (9,015.96 km) |
