| Cities | Distance |
|---|---|
| Didcot to Nottingham | 93.17 mi (149.94 km) |
| Didcot to Nuneaton | 64.09 mi (103.14 km) |
| Didcot to Oadby | 68.94 mi (110.95 km) |
| Didcot to Oakengates | 91.06 mi (146.55 km) |
| Didcot to Oakham | 76.64 mi (123.33 km) |
| Didcot to Oldbury | 70.30 mi (113.14 km) |
| Didcot to Oldham | 138.89 mi (223.51 km) |
| Didcot to Ollerton | 110.53 mi (177.88 km) |
| Didcot to Olton | 62.28 mi (100.23 km) |
| Didcot to Omagh | 324.59 mi (522.38 km) |
| Didcot to Ormesby | 203.37 mi (327.29 km) |
| Didcot to Ormskirk | 152.05 mi (244.70 km) |
| Didcot to Orpington | 59.82 mi (96.26 km) |
| Didcot to Ossett | 144.00 mi (231.75 km) |
| Didcot to Oswaldtwistle | 155.33 mi (249.99 km) |