| Round Rock to Belper | 4,803.01 mi (7,729.69 km) |
| Round Rock to Bentley | 4,800.87 mi (7,726.25 km) |
| Round Rock to Berkhampstead | 4,874.41 mi (7,844.60 km) |
| Round Rock to Berwick-Upon-Tweed | 4,708.81 mi (7,578.10 km) |
| Round Rock to Beverley | 4,819.31 mi (7,755.93 km) |
| Round Rock to Bewdley | 4,788.97 mi (7,707.11 km) |
| Round Rock to Bexleyheath | 4,910.37 mi (7,902.48 km) |
| Round Rock to Bicester | 4,847.48 mi (7,801.27 km) |
| Round Rock to Bickenhill | 4,809.98 mi (7,740.91 km) |
| Round Rock to Bickley | 4,908.56 mi (7,899.57 km) |
| Round Rock to Biddulph | 4,774.06 mi (7,683.11 km) |
| Round Rock to Bideford | 4,751.27 mi (7,646.44 km) |
| Round Rock to Bidston | 4,731.90 mi (7,615.26 km) |
| Round Rock to Biggleswade | 4,876.64 mi (7,848.20 km) |
| Round Rock to Billericay | 4,916.18 mi (7,911.83 km) |
