| Harpenden to Alafaya (Florida) | 4,317.58 mi (6,948.47 km) |
| Harpenden to Alameda (California) | 5,327.80 mi (8,574.27 km) |
| Harpenden to Alamo (California) | 5,315.22 mi (8,554.02 km) |
| Harpenden to Alamo (Texas) | 5,128.47 mi (8,253.48 km) |
| Harpenden to Alamogordo (New Mexico) | 5,065.69 mi (8,152.44 km) |
| Harpenden to Albany (California) | 5,321.67 mi (8,564.39 km) |
| Harpenden to Albany (Georgia) | 4,289.15 mi (6,902.72 km) |
| Harpenden to Albany (New York) | 3,353.07 mi (5,396.25 km) |
| Harpenden to Albany (Oregon) | 4,953.00 mi (7,971.09 km) |
| Harpenden to Albemarle (North Carolina) | 3,942.16 mi (6,344.30 km) |
| Harpenden to Albert Lea (Minnesota) | 4,057.64 mi (6,530.14 km) |
| Harpenden to Albertville (Alabama) | 4,238.96 mi (6,821.95 km) |
| Harpenden to Albuquerque (New Mexico) | 4,969.99 mi (7,998.43 km) |
| Harpenden to Alcoa (Tennessee) | 4,074.04 mi (6,556.54 km) |
| Harpenden to Alderwood Manor (Washington) | 4,747.84 mi (7,640.91 km) |
