| Ontario to Harrison (Ohio) | 1,844.20 mi (2,967.95 km) |
| Ontario to Harrison (Wisconsin) | 1,708.90 mi (2,750.20 km) |
| Ontario to Harrisonburg (Virginia) | 2,163.80 mi (3,482.29 km) |
| Ontario to Hartford (Connecticut) | 2,477.49 mi (3,987.14 km) |
| Ontario to Hartford (Wisconsin) | 1,690.98 mi (2,721.36 km) |
| Ontario to Hartselle (Alabama) | 1,745.13 mi (2,808.51 km) |
| Ontario to Hartsville (Tennessee) | 1,774.87 mi (2,856.38 km) |
| Ontario to Harvey (Illinois) | 1,706.44 mi (2,746.25 km) |
| Ontario to Harvey (Louisiana) | 1,634.50 mi (2,630.47 km) |
| Ontario to Hasbrouck Heights (New Jersey) | 2,408.48 mi (3,876.08 km) |
| Ontario to Haslett (Michigan) | 1,882.00 mi (3,028.79 km) |
| Ontario to Hastings (Minnesota) | 1,505.54 mi (2,422.93 km) |
| Ontario to Hastings (Nebraska) | 1,145.86 mi (1,844.09 km) |
| Ontario to Hattiesburg (Mississippi) | 1,650.84 mi (2,656.77 km) |
| Ontario to Hauppauge (New York) | 2,453.69 mi (3,948.83 km) |
