| Idanha-a-Nova to Bonnyrigg | 1,118.57 mi (1,800.16 km) |
| Idanha-a-Nova to Bootle | 955.73 mi (1,538.10 km) |
| Idanha-a-Nova to Borehamwood | 876.85 mi (1,411.15 km) |
| Idanha-a-Nova to Boscombe | 790.87 mi (1,272.79 km) |
| Idanha-a-Nova to Boston | 964.11 mi (1,551.59 km) |
| Idanha-a-Nova to Bottesford | 991.00 mi (1,594.86 km) |
| Idanha-a-Nova to Bourne | 945.21 mi (1,521.17 km) |
| Idanha-a-Nova to Bournemouth | 789.92 mi (1,271.25 km) |
| Idanha-a-Nova to Bournville | 900.35 mi (1,448.98 km) |
| Idanha-a-Nova to Bovingdon | 876.25 mi (1,410.19 km) |
| Idanha-a-Nova to Bowdon | 957.61 mi (1,541.12 km) |
| Idanha-a-Nova to Boxley | 870.68 mi (1,401.23 km) |
| Idanha-a-Nova to Brackley | 885.86 mi (1,425.65 km) |
| Idanha-a-Nova to Bracknell | 853.16 mi (1,373.02 km) |
| Idanha-a-Nova to Bradford | 992.86 mi (1,597.86 km) |
