| Letterkenny to Bougival | 593.72 mi (955.50 km) |
| Letterkenny to Bouguenais | 598.64 mi (963.42 km) |
| Letterkenny to Boulogne-Billancourt | 598.31 mi (962.89 km) |
| Letterkenny to Boulogne-sur-Mer | 486.38 mi (782.75 km) |
| Letterkenny to Bourg-de-Peage | 886.77 mi (1,427.12 km) |
| Letterkenny to Bourg-en-Bresse | 827.11 mi (1,331.11 km) |
| Letterkenny to Bourg-la-Reine | 603.43 mi (971.12 km) |
| Letterkenny to Bourg-les-Valence | 887.61 mi (1,428.48 km) |
| Letterkenny to Bourges | 697.98 mi (1,123.29 km) |
| Letterkenny to Bourgoin-Jallieu | 862.38 mi (1,387.86 km) |
| Letterkenny to Bressuire | 642.50 mi (1,034.01 km) |
| Letterkenny to Brest | 474.22 mi (763.18 km) |
| Letterkenny to Bretigny-sur-Orge | 611.94 mi (984.83 km) |
| Letterkenny to Breuillet | 610.36 mi (982.28 km) |
| Letterkenny to Briancon | 940.31 mi (1,513.29 km) |
