| Duncan to Bougival | 4,877.09 mi (7,848.92 km) |
| Duncan to Bouguenais | 4,784.14 mi (7,699.33 km) |
| Duncan to Boulogne-Billancourt | 4,882.11 mi (7,857.00 km) |
| Duncan to Boulogne-sur-Mer | 4,792.12 mi (7,712.17 km) |
| Duncan to Bourg-de-Peage | 5,133.91 mi (8,262.23 km) |
| Duncan to Bourg-en-Bresse | 5,096.68 mi (8,202.31 km) |
| Duncan to Bourg-la-Reine | 4,886.98 mi (7,864.83 km) |
| Duncan to Bourg-les-Valence | 5,131.05 mi (8,257.62 km) |
| Duncan to Bourges | 4,950.70 mi (7,967.38 km) |
| Duncan to Bourgoin-Jallieu | 5,122.05 mi (8,243.15 km) |
| Duncan to Bressuire | 4,842.09 mi (7,792.60 km) |
| Duncan to Brest | 4,627.28 mi (7,446.88 km) |
| Duncan to Bretigny-sur-Orge | 4,892.58 mi (7,873.84 km) |
| Duncan to Breuillet | 4,888.90 mi (7,867.93 km) |
| Duncan to Briancon | 5,203.63 mi (8,374.44 km) |
