| Round Rock to Benisa | 5,310.08 mi (8,545.75 km) |
| Round Rock to Berga | 5,279.53 mi (8,496.59 km) |
| Round Rock to Berja | 5,226.67 mi (8,411.52 km) |
| Round Rock to Bermeo | 5,031.77 mi (8,097.86 km) |
| Round Rock to Berriozar | 5,097.38 mi (8,203.43 km) |
| Round Rock to Betanzos | 4,785.08 mi (7,700.84 km) |
| Round Rock to Betera | 5,256.86 mi (8,460.09 km) |
| Round Rock to Bilbao | 5,027.82 mi (8,091.49 km) |
| Round Rock to Binefar | 5,218.14 mi (8,397.79 km) |
| Round Rock to Binisalem | 5,406.86 mi (8,701.50 km) |
| Round Rock to Blanes | 5,336.40 mi (8,588.10 km) |
| Round Rock to Boadilla del Monte | 5,070.54 mi (8,160.24 km) |
| Round Rock to Boiro | 4,769.82 mi (7,676.29 km) |
| Round Rock to Bolanos de Calatrava | 5,125.03 mi (8,247.93 km) |
| Round Rock to Bollullos de la Mitacion | 5,054.68 mi (8,134.72 km) |
