| Karlovo to Bouguenais | 1,323.70 mi (2,130.30 km) |
| Karlovo to Boulogne-Billancourt | 1,163.82 mi (1,872.99 km) |
| Karlovo to Boulogne-sur-Mer | 1,225.88 mi (1,972.87 km) |
| Karlovo to Bourg-de-Peage | 995.81 mi (1,602.60 km) |
| Karlovo to Bourg-en-Bresse | 994.11 mi (1,599.86 km) |
| Karlovo to Bourg-la-Reine | 1,159.67 mi (1,866.31 km) |
| Karlovo to Bourg-les-Valence | 1,003.11 mi (1,614.35 km) |
| Karlovo to Bourges | 1,135.16 mi (1,826.86 km) |
| Karlovo to Bourgoin-Jallieu | 987.43 mi (1,589.12 km) |
| Karlovo to Bressuire | 1,268.85 mi (2,042.02 km) |
| Karlovo to Brest | 1,462.89 mi (2,354.29 km) |
| Karlovo to Bretigny-sur-Orge | 1,157.53 mi (1,862.86 km) |
| Karlovo to Breuillet | 1,162.87 mi (1,871.45 km) |
| Karlovo to Briancon | 917.93 mi (1,477.26 km) |
| Karlovo to Brie-Comte-Robert | 1,145.17 mi (1,842.98 km) |
