| Guadarrama to Amelia | 861.05 mi (1,385.72 km) |
| Guadarrama to Anagni | 898.05 mi (1,445.27 km) |
| Guadarrama to Ancona | 922.68 mi (1,484.90 km) |
| Guadarrama to Andria | 1,062.30 mi (1,709.61 km) |
| Guadarrama to Angri | 975.34 mi (1,569.65 km) |
| Guadarrama to Anguillara Sabazia | 852.21 mi (1,371.51 km) |
| Guadarrama to Anzio | 871.21 mi (1,402.08 km) |
| Guadarrama to Anzola dell'Emilia | 820.55 mi (1,320.54 km) |
| Guadarrama to Aosta | 671.52 mi (1,080.70 km) |
| Guadarrama to Apricena | 1,015.21 mi (1,633.83 km) |
| Guadarrama to Aprilia | 872.05 mi (1,403.44 km) |
| Guadarrama to Aradeo | 1,166.70 mi (1,877.61 km) |
| Guadarrama to Aragona | 974.96 mi (1,569.04 km) |
| Guadarrama to Arco | 833.79 mi (1,341.86 km) |
| Guadarrama to Arcola | 751.30 mi (1,209.10 km) |
