| Isernia to Bougival | 771.93 mi (1,242.30 km) |
| Isernia to Bouguenais | 870.54 mi (1,401.00 km) |
| Isernia to Boulogne-Billancourt | 766.99 mi (1,234.35 km) |
| Isernia to Boulogne-sur-Mer | 870.81 mi (1,401.44 km) |
| Isernia to Bourg-de-Peage | 518.91 mi (835.11 km) |
| Isernia to Bourg-en-Bresse | 549.32 mi (884.04 km) |
| Isernia to Bourg-la-Reine | 762.00 mi (1,226.32 km) |
| Isernia to Bourg-les-Valence | 523.36 mi (842.27 km) |
| Isernia to Bourges | 695.92 mi (1,119.98 km) |
| Isernia to Bourgoin-Jallieu | 525.88 mi (846.32 km) |
| Isernia to Bressuire | 812.37 mi (1,307.38 km) |
| Isernia to Brest | 1,024.55 mi (1,648.86 km) |
| Isernia to Bretigny-sur-Orge | 755.54 mi (1,215.93 km) |
| Isernia to Breuillet | 758.77 mi (1,221.12 km) |
| Isernia to Briancon | 444.96 mi (716.09 km) |
