| Irthlingborough to Bougival | 267.73 mi (430.86 km) |
| Irthlingborough to Bouguenais | 358.41 mi (576.81 km) |
| Irthlingborough to Boulogne-Billancourt | 271.60 mi (437.10 km) |
| Irthlingborough to Boulogne-sur-Mer | 146.15 mi (235.20 km) |
| Irthlingborough to Bourg-de-Peage | 565.45 mi (910.00 km) |
| Irthlingborough to Bourg-en-Bresse | 497.74 mi (801.03 km) |
| Irthlingborough to Bourg-la-Reine | 276.55 mi (445.06 km) |
| Irthlingborough to Bourg-les-Valence | 567.97 mi (914.05 km) |
| Irthlingborough to Bourges | 386.12 mi (621.40 km) |
| Irthlingborough to Bourgoin-Jallieu | 536.32 mi (863.13 km) |
| Irthlingborough to Bressuire | 378.95 mi (609.86 km) |
| Irthlingborough to Brest | 320.95 mi (516.52 km) |
| Irthlingborough to Bretigny-sur-Orge | 286.81 mi (461.57 km) |
| Irthlingborough to Breuillet | 287.06 mi (461.98 km) |
| Irthlingborough to Briancon | 610.12 mi (981.90 km) |
