| Round Rock to Ayr | 4,621.48 mi (7,437.55 km) |
| Round Rock to Bacup | 4,757.02 mi (7,655.68 km) |
| Round Rock to Baguley | 4,762.41 mi (7,664.36 km) |
| Round Rock to Baildon | 4,769.35 mi (7,675.53 km) |
| Round Rock to Bailleston | 4,630.64 mi (7,452.30 km) |
| Round Rock to Balderton | 4,828.90 mi (7,771.36 km) |
| Round Rock to Baldock | 4,881.97 mi (7,856.78 km) |
| Round Rock to Balham | 4,899.54 mi (7,885.04 km) |
| Round Rock to Bamber Bridge | 4,738.99 mi (7,626.67 km) |
| Round Rock to Banbridge | 4,587.53 mi (7,382.92 km) |
| Round Rock to Banbury | 4,835.67 mi (7,782.26 km) |
| Round Rock to Bangor | 4,602.21 mi (7,406.55 km) |
| Round Rock to Bangor | 4,696.36 mi (7,558.07 km) |
| Round Rock to Banstead | 4,901.12 mi (7,887.60 km) |
| Round Rock to Bargoed | 4,771.64 mi (7,679.22 km) |
