| Arouca to Karlovo | 1,695.97 mi (2,729.40 km) |
| Arouca to Karnobat | 1,805.64 mi (2,905.89 km) |
| Arouca to Kavarna | 1,865.59 mi (3,002.38 km) |
| Arouca to Kazanlak | 1,726.09 mi (2,777.87 km) |
| Arouca to Knezha | 1,653.25 mi (2,660.65 km) |
| Arouca to Kostinbrod | 1,614.40 mi (2,598.13 km) |
| Arouca to Kozloduy | 1,634.22 mi (2,630.03 km) |
| Arouca to Kyustendil | 1,591.71 mi (2,561.61 km) |
| Arouca to Levski | 1,706.58 mi (2,746.47 km) |
| Arouca to Lom | 1,609.36 mi (2,590.01 km) |
| Arouca to Lovech | 1,687.45 mi (2,715.68 km) |
| Arouca to Lukovit | 1,659.39 mi (2,670.52 km) |
| Arouca to Lyaskovets | 1,737.80 mi (2,796.72 km) |
| Arouca to Mezdra | 1,636.33 mi (2,633.42 km) |
| Arouca to Momchilgrad | 1,738.41 mi (2,797.69 km) |
