| Grefrath to Berga | 672.42 mi (1,082.16 km) |
| Grefrath to Berja | 1,100.15 mi (1,770.52 km) |
| Grefrath to Bermeo | 691.11 mi (1,112.23 km) |
| Grefrath to Berriozar | 696.94 mi (1,121.61 km) |
| Grefrath to Betanzos | 877.40 mi (1,412.04 km) |
| Grefrath to Betera | 874.92 mi (1,408.05 km) |
| Grefrath to Bilbao | 706.01 mi (1,136.21 km) |
| Grefrath to Binefar | 714.84 mi (1,150.43 km) |
| Grefrath to Binisalem | 822.62 mi (1,323.88 km) |
| Grefrath to Blanes | 688.38 mi (1,107.85 km) |
| Grefrath to Boadilla del Monte | 899.10 mi (1,446.96 km) |
| Grefrath to Boiro | 932.78 mi (1,501.16 km) |
| Grefrath to Bolanos de Calatrava | 988.30 mi (1,590.51 km) |
| Grefrath to Bollullos de la Mitacion | 1,143.70 mi (1,840.61 km) |
| Grefrath to Bollullos par del Condado | 1,154.16 mi (1,857.44 km) |
