| Didcot to Alum Rock (California) | 5,321.71 mi (8,564.46 km) |
| Didcot to Alvin (Texas) | 4,818.27 mi (7,754.26 km) |
| Didcot to Amarillo (Texas) | 4,766.92 mi (7,671.61 km) |
| Didcot to Amelia (Ohio) | 3,901.19 mi (6,278.36 km) |
| Didcot to American Canyon (California) | 5,287.89 mi (8,510.03 km) |
| Didcot to American Fork (Utah) | 4,838.16 mi (7,786.26 km) |
| Didcot to Americus (Georgia) | 4,234.32 mi (6,814.49 km) |
| Didcot to Ames (Iowa) | 4,120.26 mi (6,630.92 km) |
| Didcot to Amherst (Ohio) | 3,713.85 mi (5,976.86 km) |
| Didcot to Ammon (Idaho) | 4,676.04 mi (7,525.36 km) |
| Didcot to Amsterdam (New York) | 3,326.49 mi (5,353.46 km) |
| Didcot to Anacortes (Washington) | 4,707.34 mi (7,575.73 km) |
| Didcot to Anaheim (California) | 5,399.72 mi (8,690.01 km) |
| Didcot to Anchorage (Alaska) | 4,446.82 mi (7,156.46 km) |
| Didcot to Anderson (California) | 5,157.92 mi (8,300.86 km) |
