| Ontario to Hamtramck (Michigan) | 1,947.21 mi (3,133.73 km) |
| Ontario to Hanahan (South Carolina) | 2,156.06 mi (3,469.84 km) |
| Ontario to Hanford (California) | 195.88 mi (315.24 km) |
| Ontario to Hannibal (Missouri) | 1,494.85 mi (2,405.73 km) |
| Ontario to Hanover (Pennsylvania) | 2,259.19 mi (3,635.82 km) |
| Ontario to Hanover Park (Illinois) | 1,685.24 mi (2,712.13 km) |
| Ontario to Happy Valley (Oregon) | 828.95 mi (1,334.06 km) |
| Ontario to Harker Heights (Texas) | 1,178.74 mi (1,897.00 km) |
| Ontario to Harlingen (Texas) | 1,304.51 mi (2,099.40 km) |
| Ontario to Harper Woods (Michigan) | 1,953.94 mi (3,144.56 km) |
| Ontario to Harrisburg (North Carolina) | 2,089.64 mi (3,362.94 km) |
| Ontario to Harrisburg (Pennsylvania) | 2,263.01 mi (3,641.95 km) |
| Ontario to Harrison (Arkansas) | 1,388.13 mi (2,233.98 km) |
| Ontario to Harrison (New Jersey) | 2,404.80 mi (3,870.15 km) |
| Ontario to Harrison (New York) | 2,426.38 mi (3,904.88 km) |
