| Didcot to Marshall (Minnesota) | 4,082.76 mi (6,570.57 km) |
| Didcot to Marshall (Missouri) | 4,245.57 mi (6,832.59 km) |
| Didcot to Marshall (Texas) | 4,618.93 mi (7,433.45 km) |
| Didcot to Marshalltown (Iowa) | 4,093.40 mi (6,587.69 km) |
| Didcot to Marshfield (Wisconsin) | 3,869.36 mi (6,227.14 km) |
| Didcot to Martha Lake (Washington) | 4,733.17 mi (7,617.29 km) |
| Didcot to Martin (Tennessee) | 4,212.56 mi (6,779.47 km) |
| Didcot to Martinez (California) | 5,294.12 mi (8,520.07 km) |
| Didcot to Martinez (Georgia) | 4,076.25 mi (6,560.09 km) |
| Didcot to Martinsburg (West Virginia) | 3,630.67 mi (5,843.00 km) |
| Didcot to Martinsville (Indiana) | 3,970.23 mi (6,389.46 km) |
| Didcot to Martinsville (New Jersey) | 3,441.60 mi (5,538.71 km) |
| Didcot to Martinsville (Virginia) | 3,834.43 mi (6,170.92 km) |
| Didcot to Maryland City (Maryland) | 3,598.85 mi (5,791.79 km) |
| Didcot to Maryland Heights (Missouri) | 4,160.58 mi (6,695.80 km) |
