| Fall River to Karlovo | 4,614.13 mi (7,425.72 km) |
| Fall River to Karnobat | 4,703.30 mi (7,569.23 km) |
| Fall River to Kavarna | 4,723.90 mi (7,602.38 km) |
| Fall River to Kazanlak | 4,639.53 mi (7,466.60 km) |
| Fall River to Knezha | 4,549.89 mi (7,322.35 km) |
| Fall River to Kostinbrod | 4,541.58 mi (7,308.97 km) |
| Fall River to Kozloduy | 4,524.30 mi (7,281.16 km) |
| Fall River to Kyustendil | 4,540.67 mi (7,307.50 km) |
| Fall River to Levski | 4,598.04 mi (7,399.83 km) |
| Fall River to Lom | 4,502.38 mi (7,245.88 km) |
| Fall River to Lovech | 4,590.50 mi (7,387.69 km) |
| Fall River to Lukovit | 4,565.35 mi (7,347.21 km) |
| Fall River to Lyaskovets | 4,632.62 mi (7,455.48 km) |
| Fall River to Mezdra | 4,548.20 mi (7,319.63 km) |
| Fall River to Momchilgrad | 4,684.84 mi (7,539.51 km) |
