| Willoughby to Hamtramck (Michigan) | 99.16 mi (159.58 km) |
| Willoughby to Hanahan (South Carolina) | 607.11 mi (977.05 km) |
| Willoughby to Hanford (California) | 2,069.26 mi (3,330.16 km) |
| Willoughby to Hannibal (Missouri) | 539.71 mi (868.58 km) |
| Willoughby to Hanover (Pennsylvania) | 264.02 mi (424.90 km) |
| Willoughby to Hanover Park (Illinois) | 347.57 mi (559.37 km) |
| Willoughby to Happy Valley (Oregon) | 2,052.38 mi (3,302.99 km) |
| Willoughby to Harker Heights (Texas) | 1,159.11 mi (1,865.40 km) |
| Willoughby to Harlingen (Texas) | 1,413.54 mi (2,274.87 km) |
| Willoughby to Harper Woods (Michigan) | 95.36 mi (153.46 km) |
| Willoughby to Harrisburg (North Carolina) | 439.52 mi (707.33 km) |
| Willoughby to Harrisburg (Pennsylvania) | 254.30 mi (409.26 km) |
| Willoughby to Harrison (Arkansas) | 730.73 mi (1,176.00 km) |
| Willoughby to Harrison (New Jersey) | 382.21 mi (615.11 km) |
| Willoughby to Harrison (New York) | 401.08 mi (645.48 km) |
