| Idanha-a-Nova to Bougival | 771.02 mi (1,240.84 km) |
| Idanha-a-Nova to Bouguenais | 574.66 mi (924.83 km) |
| Idanha-a-Nova to Boulogne-Billancourt | 772.45 mi (1,243.13 km) |
| Idanha-a-Nova to Boulogne-sur-Mer | 860.33 mi (1,384.57 km) |
| Idanha-a-Nova to Bourg-de-Peage | 717.92 mi (1,155.38 km) |
| Idanha-a-Nova to Bourg-en-Bresse | 763.16 mi (1,228.19 km) |
| Idanha-a-Nova to Bourg-la-Reine | 771.75 mi (1,242.01 km) |
| Idanha-a-Nova to Bourg-les-Valence | 708.43 mi (1,140.10 km) |
| Idanha-a-Nova to Bourges | 690.51 mi (1,111.26 km) |
| Idanha-a-Nova to Bourgoin-Jallieu | 744.43 mi (1,198.05 km) |
| Idanha-a-Nova to Bressuire | 585.64 mi (942.50 km) |
| Idanha-a-Nova to Brest | 600.93 mi (967.10 km) |
| Idanha-a-Nova to Bretigny-sur-Orge | 762.74 mi (1,227.52 km) |
| Idanha-a-Nova to Breuillet | 756.33 mi (1,217.19 km) |
| Idanha-a-Nova to Briancon | 785.32 mi (1,263.84 km) |
