| Potomac Park to Bougival | 5,587.21 mi (8,991.74 km) |
| Potomac Park to Bouguenais | 5,542.57 mi (8,919.90 km) |
| Potomac Park to Boulogne-Billancourt | 5,591.93 mi (8,999.34 km) |
| Potomac Park to Boulogne-sur-Mer | 5,480.11 mi (8,819.39 km) |
| Potomac Park to Bourg-de-Peage | 5,872.95 mi (9,451.60 km) |
| Potomac Park to Bourg-en-Bresse | 5,819.52 mi (9,365.62 km) |
| Potomac Park to Bourg-la-Reine | 5,597.03 mi (9,007.55 km) |
| Potomac Park to Bourg-les-Valence | 5,872.40 mi (9,450.71 km) |
| Potomac Park to Bourges | 5,682.84 mi (9,145.65 km) |
| Potomac Park to Bourgoin-Jallieu | 5,852.46 mi (9,418.63 km) |
| Potomac Park to Bressuire | 5,597.48 mi (9,008.27 km) |
| Potomac Park to Brest | 5,387.40 mi (8,670.19 km) |
| Potomac Park to Bretigny-sur-Orge | 5,604.97 mi (9,020.33 km) |
| Potomac Park to Breuillet | 5,602.85 mi (9,016.91 km) |
| Potomac Park to Briancon | 5,932.26 mi (9,547.06 km) |
