| Willoughby to Harrison (Ohio) | 242.37 mi (390.06 km) |
| Willoughby to Harrison (Wisconsin) | 390.16 mi (627.91 km) |
| Willoughby to Harrisonburg (Virginia) | 259.12 mi (417.02 km) |
| Willoughby to Hartford (Connecticut) | 449.94 mi (724.12 km) |
| Willoughby to Hartford (Wisconsin) | 373.42 mi (600.96 km) |
| Willoughby to Hartselle (Alabama) | 581.52 mi (935.87 km) |
| Willoughby to Hartsville (Tennessee) | 443.39 mi (713.57 km) |
| Willoughby to Harvey (Illinois) | 322.40 mi (518.85 km) |
| Willoughby to Harvey (Louisiana) | 945.18 mi (1,521.12 km) |
| Willoughby to Hasbrouck Heights (New Jersey) | 384.68 mi (619.09 km) |
| Willoughby to Haslett (Michigan) | 171.23 mi (275.57 km) |
| Willoughby to Hastings (Minnesota) | 614.07 mi (988.26 km) |
| Willoughby to Hastings (Nebraska) | 885.41 mi (1,424.94 km) |
| Willoughby to Hattiesburg (Mississippi) | 837.75 mi (1,348.22 km) |
| Willoughby to Hauppauge (New York) | 429.57 mi (691.33 km) |
