| Viana do Castelo to Karlovo | 1,712.47 mi (2,755.96 km) |
| Viana do Castelo to Karnobat | 1,821.58 mi (2,931.55 km) |
| Viana do Castelo to Kavarna | 1,879.36 mi (3,024.54 km) |
| Viana do Castelo to Kazanlak | 1,742.50 mi (2,804.29 km) |
| Viana do Castelo to Knezha | 1,667.80 mi (2,684.06 km) |
| Viana do Castelo to Kostinbrod | 1,630.87 mi (2,624.64 km) |
| Viana do Castelo to Kozloduy | 1,648.11 mi (2,652.38 km) |
| Viana do Castelo to Kyustendil | 1,609.68 mi (2,590.53 km) |
| Viana do Castelo to Levski | 1,721.23 mi (2,770.06 km) |
| Viana do Castelo to Lom | 1,623.22 mi (2,612.31 km) |
| Viana do Castelo to Lovech | 1,702.77 mi (2,740.34 km) |
| Viana do Castelo to Lukovit | 1,674.67 mi (2,695.12 km) |
| Viana do Castelo to Lyaskovets | 1,752.98 mi (2,821.14 km) |
| Viana do Castelo to Mezdra | 1,651.84 mi (2,658.38 km) |
| Viana do Castelo to Momchilgrad | 1,757.37 mi (2,828.22 km) |
