| Guadarrama to Borgosatollo | 794.20 mi (1,278.14 km) |
| Guadarrama to Borgosesia | 712.16 mi (1,146.11 km) |
| Guadarrama to Boscoreale | 970.76 mi (1,562.29 km) |
| Guadarrama to Boscotrecase | 969.78 mi (1,560.71 km) |
| Guadarrama to Botticino Sera | 795.23 mi (1,279.80 km) |
| Guadarrama to Bovalino Marina | 1,092.73 mi (1,758.57 km) |
| Guadarrama to Boves | 643.80 mi (1,036.10 km) |
| Guadarrama to Boville Ernica | 914.10 mi (1,471.11 km) |
| Guadarrama to Bovisio Masciago | 748.45 mi (1,204.52 km) |
| Guadarrama to Bovolone | 830.47 mi (1,336.51 km) |
| Guadarrama to Bra | 666.30 mi (1,072.30 km) |
| Guadarrama to Bracciano | 847.96 mi (1,364.66 km) |
| Guadarrama to Brandizzo | 677.99 mi (1,091.12 km) |
| Guadarrama to Breganze | 859.90 mi (1,383.87 km) |
| Guadarrama to Brembate | 765.95 mi (1,232.67 km) |
