| Conwy to Hazleton (Pennsylvania) | 3,344.62 mi (5,382.65 km) |
| Conwy to Healdsburg (California) | 5,121.26 mi (8,241.88 km) |
| Conwy to Heath (Ohio) | 3,641.62 mi (5,860.63 km) |
| Conwy to Heber (Utah) | 4,660.60 mi (7,500.51 km) |
| Conwy to Helena (Alabama) | 4,143.88 mi (6,668.93 km) |
| Conwy to Helena (Montana) | 4,352.34 mi (7,004.41 km) |
| Conwy to Hemet (California) | 5,220.04 mi (8,400.84 km) |
| Conwy to Henderson (Kentucky) | 3,945.43 mi (6,349.56 km) |
| Conwy to Henderson (Nevada) | 5,027.36 mi (8,090.76 km) |
| Conwy to Henderson (North Carolina) | 3,656.72 mi (5,884.92 km) |
| Conwy to Henderson (Texas) | 4,510.78 mi (7,259.39 km) |
| Conwy to Hendersonville (North Carolina) | 3,866.97 mi (6,223.28 km) |
| Conwy to Hendersonville (Tennessee) | 3,982.47 mi (6,409.17 km) |
| Conwy to Hercules (California) | 5,138.98 mi (8,270.39 km) |
| Conwy to Hereford (Texas) | 4,655.67 mi (7,492.58 km) |
