| Catonsville to Bonhill | 3,379.69 mi (5,439.09 km) |
| Catonsville to Bonnyrigg | 3,436.62 mi (5,530.70 km) |
| Catonsville to Bootle | 3,482.35 mi (5,604.30 km) |
| Catonsville to Borehamwood | 3,627.38 mi (5,837.70 km) |
| Catonsville to Boscombe | 3,583.11 mi (5,766.45 km) |
| Catonsville to Boston | 3,609.34 mi (5,808.67 km) |
| Catonsville to Bottesford | 3,571.88 mi (5,748.38 km) |
| Catonsville to Bourne | 3,599.47 mi (5,792.78 km) |
| Catonsville to Bournemouth | 3,581.55 mi (5,763.95 km) |
| Catonsville to Bournville | 3,543.88 mi (5,703.33 km) |
| Catonsville to Bovingdon | 3,615.21 mi (5,818.12 km) |
| Catonsville to Bowdon | 3,508.36 mi (5,646.16 km) |
| Catonsville to Boxley | 3,668.50 mi (5,903.88 km) |
| Catonsville to Brackley | 3,583.88 mi (5,767.70 km) |
| Catonsville to Bracknell | 3,613.19 mi (5,814.87 km) |
