| Westbrook to Marrero (Louisiana) | 1,444.18 mi (2,324.18 km) |
| Westbrook to Marshall (Minnesota) | 1,258.64 mi (2,025.59 km) |
| Westbrook to Marshall (Missouri) | 1,221.23 mi (1,965.38 km) |
| Westbrook to Marshall (Texas) | 1,507.05 mi (2,425.37 km) |
| Westbrook to Marshalltown (Iowa) | 1,144.33 mi (1,841.62 km) |
| Westbrook to Marshfield (Wisconsin) | 981.89 mi (1,580.21 km) |
| Westbrook to Martha Lake (Washington) | 2,469.27 mi (3,973.91 km) |
| Westbrook to Martin (Tennessee) | 1,099.48 mi (1,769.45 km) |
| Westbrook to Martinez (California) | 2,689.64 mi (4,328.56 km) |
| Westbrook to Martinez (Georgia) | 944.81 mi (1,520.52 km) |
| Westbrook to Martinsburg (West Virginia) | 490.55 mi (789.46 km) |
| Westbrook to Martinsville (Indiana) | 880.57 mi (1,417.15 km) |
| Westbrook to Martinsville (New Jersey) | 303.91 mi (489.09 km) |
| Westbrook to Martinsville (Virginia) | 696.77 mi (1,121.34 km) |
| Westbrook to Maryland City (Maryland) | 460.75 mi (741.50 km) |
