| Karlovo to Bolsward | 1,141.36 mi (1,836.84 km) |
| Karlovo to Borger | 1,091.84 mi (1,757.14 km) |
| Karlovo to Borne | 1,070.27 mi (1,722.43 km) |
| Karlovo to Boskoop | 1,140.18 mi (1,834.94 km) |
| Karlovo to Boxmeer | 1,077.68 mi (1,734.36 km) |
| Karlovo to Boxtel | 1,099.11 mi (1,768.85 km) |
| Karlovo to Breda | 1,120.78 mi (1,803.72 km) |
| Karlovo to Breukelen | 1,130.25 mi (1,818.96 km) |
| Karlovo to Brielle | 1,153.56 mi (1,856.48 km) |
| Karlovo to Bronkhorst | 1,083.35 mi (1,743.48 km) |
| Karlovo to Brummen | 1,084.58 mi (1,745.46 km) |
| Karlovo to Brunssum | 1,055.28 mi (1,698.31 km) |
| Karlovo to Bunnik | 1,117.63 mi (1,798.66 km) |
| Karlovo to Burgum | 1,129.83 mi (1,818.28 km) |
| Karlovo to Bussum | 1,127.71 mi (1,814.88 km) |
