| Donegal to Bougival | 592.32 mi (953.25 km) |
| Donegal to Bouguenais | 588.27 mi (946.73 km) |
| Donegal to Boulogne-Billancourt | 597.00 mi (960.78 km) |
| Donegal to Boulogne-sur-Mer | 488.73 mi (786.53 km) |
| Donegal to Bourg-de-Peage | 883.26 mi (1,421.46 km) |
| Donegal to Bourg-en-Bresse | 825.30 mi (1,328.20 km) |
| Donegal to Bourg-la-Reine | 602.11 mi (969.00 km) |
| Donegal to Bourg-les-Valence | 883.81 mi (1,422.36 km) |
| Donegal to Bourges | 693.81 mi (1,116.58 km) |
| Donegal to Bourgoin-Jallieu | 859.80 mi (1,383.71 km) |
| Donegal to Bressuire | 633.61 mi (1,019.70 km) |
| Donegal to Brest | 459.77 mi (739.93 km) |
| Donegal to Bretigny-sur-Orge | 610.28 mi (982.15 km) |
| Donegal to Breuillet | 608.41 mi (979.15 km) |
| Donegal to Briancon | 938.41 mi (1,510.22 km) |
