| Ada to Hazleton (Pennsylvania) | 4,529.23 mi (7,289.09 km) |
| Ada to Healdsburg (California) | 6,168.93 mi (9,927.94 km) |
| Ada to Heath (Ohio) | 4,824.72 mi (7,764.63 km) |
| Ada to Heber (Utah) | 5,765.30 mi (9,278.35 km) |
| Ada to Helena (Alabama) | 5,328.46 mi (8,575.33 km) |
| Ada to Helena (Montana) | 5,423.84 mi (8,728.83 km) |
| Ada to Hemet (California) | 6,324.47 mi (10,178.26 km) |
| Ada to Henderson (Kentucky) | 5,126.72 mi (8,250.67 km) |
| Ada to Henderson (Nevada) | 6,132.96 mi (9,870.05 km) |
| Ada to Henderson (North Carolina) | 4,840.04 mi (7,789.29 km) |
| Ada to Henderson (Texas) | 5,691.11 mi (9,158.96 km) |
| Ada to Hendersonville (North Carolina) | 5,051.43 mi (8,129.48 km) |
| Ada to Hendersonville (Tennessee) | 5,165.96 mi (8,313.81 km) |
| Ada to Hercules (California) | 6,193.57 mi (9,967.58 km) |
| Ada to Hereford (Texas) | 5,815.52 mi (9,359.18 km) |
