| Hertford to Ukiah (California) | 5,283.66 mi (8,503.23 km) |
| Hertford to Union (Missouri) | 4,232.81 mi (6,812.05 km) |
| Hertford to Union City (California) | 5,339.14 mi (8,592.52 km) |
| Hertford to Union City (Georgia) | 4,216.97 mi (6,786.56 km) |
| Hertford to Union City (New Jersey) | 3,455.66 mi (5,561.34 km) |
| Hertford to Union City (Tennessee) | 4,256.43 mi (6,850.07 km) |
| Hertford to Union Hill-Novelty Hill (Washington) | 4,757.69 mi (7,656.76 km) |
| Hertford to Union Park (Florida) | 4,329.51 mi (6,967.67 km) |
| Hertford to Uniondale (New York) | 3,440.05 mi (5,536.23 km) |
| Hertford to Universal City (Texas) | 4,968.27 mi (7,995.66 km) |
| Hertford to University (Florida) | 4,404.05 mi (7,087.63 km) |
| Hertford to University City (Missouri) | 4,196.52 mi (6,753.64 km) |
| Hertford to University Heights (Ohio) | 3,722.86 mi (5,991.36 km) |
| Hertford to University of California-Santa Barbara (California) | 5,458.67 mi (8,784.88 km) |
| Hertford to University Park (Texas) | 4,737.13 mi (7,623.68 km) |
