| Idrija to Blackburn | 905.72 mi (1,457.61 km) |
| Idrija to Blackpool | 928.22 mi (1,493.83 km) |
| Idrija to Blairgowrie | 1,042.40 mi (1,677.57 km) |
| Idrija to Blandford Forum | 812.36 mi (1,307.36 km) |
| Idrija to Blaydon | 924.92 mi (1,488.52 km) |
| Idrija to Bletchley | 784.59 mi (1,262.67 km) |
| Idrija to Bloxwich | 851.67 mi (1,370.64 km) |
| Idrija to Blunsdon Saint Andrew | 815.04 mi (1,311.69 km) |
| Idrija to Blyth | 924.98 mi (1,488.61 km) |
| Idrija to Bo'ness | 1,027.34 mi (1,653.35 km) |
| Idrija to Bodmin | 913.17 mi (1,469.61 km) |
| Idrija to Bognor Regis | 749.34 mi (1,205.94 km) |
| Idrija to Bolsover | 845.34 mi (1,360.44 km) |
| Idrija to Bolton | 898.09 mi (1,445.33 km) |
| Idrija to Bonhill | 1,056.77 mi (1,700.70 km) |
