| Willoughby to Mill Creek (Washington) | 2,022.43 mi (3,254.79 km) |
| Willoughby to Mill Creek East (Washington) | 2,021.79 mi (3,253.76 km) |
| Willoughby to Mill Valley (California) | 2,178.64 mi (3,506.18 km) |
| Willoughby to Millbrae (California) | 2,178.84 mi (3,506.51 km) |
| Willoughby to Millbrook (Alabama) | 688.16 mi (1,107.48 km) |
| Willoughby to Millcreek (Utah) | 1,575.42 mi (2,535.39 km) |
| Willoughby to Milledgeville (Georgia) | 599.80 mi (965.28 km) |
| Willoughby to Miller Place (New York) | 439.77 mi (707.74 km) |
| Willoughby to Millington (Tennessee) | 632.62 mi (1,018.10 km) |
| Willoughby to Millville (New Jersey) | 368.13 mi (592.45 km) |
| Willoughby to Milpitas (California) | 2,156.66 mi (3,470.81 km) |
| Willoughby to Milton (Georgia) | 542.48 mi (873.04 km) |
| Willoughby to Milwaukee (Wisconsin) | 348.83 mi (561.39 km) |
| Willoughby to Milwaukie (Oregon) | 2,057.77 mi (3,311.66 km) |
| Willoughby to Minden (Louisiana) | 901.90 mi (1,451.46 km) |
