| Boulder to Bitonto | 5,751.18 mi (9,255.63 km) |
| Boulder to Bitritto | 5,759.78 mi (9,269.46 km) |
| Boulder to Bollate | 5,267.77 mi (8,477.65 km) |
| Boulder to Bologna | 5,396.30 mi (8,684.51 km) |
| Boulder to Bolzano | 5,298.04 mi (8,526.37 km) |
| Boulder to Bomporto | 5,373.83 mi (8,648.35 km) |
| Boulder to Bonate di Sopra | 5,276.93 mi (8,492.40 km) |
| Boulder to Bondeno | 5,379.62 mi (8,657.67 km) |
| Boulder to Bordighera | 5,300.89 mi (8,530.96 km) |
| Boulder to Borgaro Torinese | 5,235.37 mi (8,425.52 km) |
| Boulder to Borgo a Buggiano | 5,405.19 mi (8,698.81 km) |
| Boulder to Borgo San Dalmazzo | 5,268.14 mi (8,478.26 km) |
| Boulder to Borgo San Lorenzo | 5,424.57 mi (8,730.00 km) |
| Boulder to Borgomanero | 5,237.95 mi (8,429.66 km) |
| Boulder to Borgoricco | 5,367.01 mi (8,637.37 km) |
