| Ontario to Havelock (North Carolina) | 2,303.28 mi (3,706.77 km) |
| Ontario to Haverhill (Massachusetts) | 2,556.06 mi (4,113.58 km) |
| Ontario to Havre de Grace (Maryland) | 2,306.38 mi (3,711.77 km) |
| Ontario to Hawaiian Gardens (California) | 30.38 mi (48.90 km) |
| Ontario to Hawaiian Paradise Park (Hawaii) | 2,493.28 mi (4,012.54 km) |
| Ontario to Hawthorne (California) | 43.33 mi (69.74 km) |
| Ontario to Hawthorne (New Jersey) | 2,403.75 mi (3,868.47 km) |
| Ontario to Hayden (Idaho) | 949.47 mi (1,528.03 km) |
| Ontario to Hayesville (Oregon) | 807.74 mi (1,299.93 km) |
| Ontario to Hays (Kansas) | 1,067.51 mi (1,717.99 km) |
| Ontario to Haysville (Kansas) | 1,158.37 mi (1,864.22 km) |
| Ontario to Hayward (California) | 352.53 mi (567.35 km) |
| Ontario to Hazel Crest (Illinois) | 1,704.17 mi (2,742.60 km) |
| Ontario to Hazel Dell (Washington) | 847.22 mi (1,363.47 km) |
| Ontario to Hazel Park (Michigan) | 1,945.55 mi (3,131.06 km) |
