| Ostrow Mazowiecka to Amelia | 832.80 mi (1,340.27 km) |
| Ostrow Mazowiecka to Anagni | 865.53 mi (1,392.94 km) |
| Ostrow Mazowiecka to Ancona | 741.56 mi (1,193.43 km) |
| Ostrow Mazowiecka to Andria | 842.05 mi (1,355.15 km) |
| Ostrow Mazowiecka to Angri | 901.95 mi (1,451.54 km) |
| Ostrow Mazowiecka to Anguillara Sabazia | 864.85 mi (1,391.84 km) |
| Ostrow Mazowiecka to Anzio | 895.69 mi (1,441.48 km) |
| Ostrow Mazowiecka to Anzola dell'Emilia | 749.18 mi (1,205.68 km) |
| Ostrow Mazowiecka to Aosta | 816.46 mi (1,313.96 km) |
| Ostrow Mazowiecka to Apricena | 819.56 mi (1,318.95 km) |
| Ostrow Mazowiecka to Aprilia | 886.74 mi (1,427.07 km) |
| Ostrow Mazowiecka to Aradeo | 893.03 mi (1,437.20 km) |
| Ostrow Mazowiecka to Aragona | 1,136.19 mi (1,828.52 km) |
| Ostrow Mazowiecka to Arco | 685.60 mi (1,103.36 km) |
| Ostrow Mazowiecka to Arcola | 811.70 mi (1,306.31 km) |
