| Didcot to Portage (Michigan) | 3,808.87 mi (6,129.79 km) |
| Didcot to Portage (Wisconsin) | 3,894.29 mi (6,267.25 km) |
| Didcot to Portales (New Mexico) | 4,876.91 mi (7,848.63 km) |
| Didcot to Porterville (California) | 5,310.63 mi (8,546.63 km) |
| Didcot to Portland (Maine) | 3,137.64 mi (5,049.54 km) |
| Didcot to Portland (Oregon) | 4,875.89 mi (7,846.98 km) |
| Didcot to Portland (Tennessee) | 4,107.93 mi (6,611.08 km) |
| Didcot to Portland (Texas) | 4,976.99 mi (8,009.69 km) |
| Didcot to Portsmouth (New Hampshire) | 3,183.49 mi (5,123.33 km) |
| Didcot to Portsmouth (Ohio) | 3,862.98 mi (6,216.86 km) |
| Didcot to Portsmouth (Virginia) | 3,682.36 mi (5,926.18 km) |
| Didcot to Post Falls (Idaho) | 4,594.85 mi (7,394.69 km) |
| Didcot to Potomac (Maryland) | 3,618.67 mi (5,823.69 km) |
| Didcot to Potomac Park (California) | 5,348.44 mi (8,607.48 km) |
| Didcot to Pottstown (Pennsylvania) | 3,500.60 mi (5,633.66 km) |
