| Boulder to Belvedere Marittimo | 5,801.09 mi (9,335.96 km) |
| Boulder to Benevento | 5,684.88 mi (9,148.93 km) |
| Boulder to Bergamo | 5,279.93 mi (8,497.23 km) |
| Boulder to Bernalda | 5,787.77 mi (9,314.51 km) |
| Boulder to Bertinoro | 5,440.57 mi (8,755.75 km) |
| Boulder to Besana in Brianza | 5,266.33 mi (8,475.34 km) |
| Boulder to Besozzo | 5,237.75 mi (8,429.34 km) |
| Boulder to Biancavilla | 5,867.19 mi (9,442.34 km) |
| Boulder to Biassono | 5,268.97 mi (8,479.58 km) |
| Boulder to Bibbiano | 5,357.49 mi (8,622.05 km) |
| Boulder to Bibbiena | 5,452.01 mi (8,774.17 km) |
| Boulder to Biella | 5,230.30 mi (8,417.35 km) |
| Boulder to Bisceglie | 5,738.52 mi (9,235.25 km) |
| Boulder to Bisignano | 5,820.89 mi (9,367.82 km) |
| Boulder to Bitetto | 5,757.81 mi (9,266.30 km) |
