| Hertford to Amelia | 865.12 mi (1,392.28 km) |
| Hertford to Anagni | 932.51 mi (1,500.74 km) |
| Hertford to Ancona | 845.42 mi (1,360.57 km) |
| Hertford to Andria | 1,063.61 mi (1,711.72 km) |
| Hertford to Angri | 1,032.32 mi (1,661.36 km) |
| Hertford to Anguillara Sabazia | 886.12 mi (1,426.07 km) |
| Hertford to Anzio | 932.61 mi (1,500.89 km) |
| Hertford to Anzola dell'Emilia | 720.08 mi (1,158.85 km) |
| Hertford to Aosta | 536.93 mi (864.11 km) |
| Hertford to Apricena | 1,005.49 mi (1,618.18 km) |
| Hertford to Aprilia | 925.64 mi (1,489.68 km) |
| Hertford to Aradeo | 1,183.15 mi (1,904.10 km) |
| Hertford to Aragona | 1,196.96 mi (1,926.32 km) |
| Hertford to Arco | 641.73 mi (1,032.76 km) |
| Hertford to Arcola | 702.08 mi (1,129.88 km) |
