| Catonsville to Oswaldtwistle | 3,500.48 mi (5,633.48 km) |
| Catonsville to Oswestry | 3,490.57 mi (5,617.53 km) |
| Catonsville to Otley | 3,525.20 mi (5,673.26 km) |
| Catonsville to Ovenden | 3,520.75 mi (5,666.09 km) |
| Catonsville to Oxford | 3,585.25 mi (5,769.89 km) |
| Catonsville to Oxted | 3,647.09 mi (5,869.43 km) |
| Catonsville to Padbury | 3,593.06 mi (5,782.48 km) |
| Catonsville to Padiham | 3,502.71 mi (5,637.07 km) |
| Catonsville to Paignton | 3,517.19 mi (5,660.37 km) |
| Catonsville to Paisley | 3,387.11 mi (5,451.03 km) |
| Catonsville to Palmers Green | 3,634.89 mi (5,849.79 km) |
| Catonsville to Parkstone | 3,578.85 mi (5,759.61 km) |
| Catonsville to Partick | 3,390.97 mi (5,457.24 km) |
| Catonsville to Patcham | 3,650.00 mi (5,874.11 km) |
| Catonsville to Peebles | 3,436.91 mi (5,531.17 km) |
