| Ada to Nottingham | 1,071.84 mi (1,724.96 km) |
| Ada to Nuneaton | 1,075.35 mi (1,730.61 km) |
| Ada to Oadby | 1,061.21 mi (1,707.85 km) |
| Ada to Oakengates | 1,118.27 mi (1,799.69 km) |
| Ada to Oakham | 1,049.09 mi (1,688.35 km) |
| Ada to Oldbury | 1,097.08 mi (1,765.59 km) |
| Ada to Oldham | 1,123.00 mi (1,807.29 km) |
| Ada to Ollerton | 1,072.41 mi (1,725.88 km) |
| Ada to Olton | 1,087.30 mi (1,749.84 km) |
| Ada to Omagh | 1,344.70 mi (2,164.09 km) |
| Ada to Ormesby | 1,113.48 mi (1,791.97 km) |
| Ada to Ormskirk | 1,153.40 mi (1,856.22 km) |
| Ada to Orpington | 989.31 mi (1,592.15 km) |
| Ada to Ossett | 1,105.53 mi (1,779.18 km) |
| Ada to Oswaldtwistle | 1,138.24 mi (1,831.83 km) |
