| Owings Mills to Oswaldtwistle | 3,495.54 mi (5,625.53 km) |
| Owings Mills to Oswestry | 3,485.83 mi (5,609.91 km) |
| Owings Mills to Otley | 3,520.20 mi (5,665.22 km) |
| Owings Mills to Ovenden | 3,515.79 mi (5,658.12 km) |
| Owings Mills to Oxford | 3,580.67 mi (5,762.52 km) |
| Owings Mills to Oxted | 3,642.56 mi (5,862.13 km) |
| Owings Mills to Padbury | 3,588.43 mi (5,775.02 km) |
| Owings Mills to Padiham | 3,497.76 mi (5,629.10 km) |
| Owings Mills to Paignton | 3,512.97 mi (5,653.58 km) |
| Owings Mills to Paisley | 3,381.81 mi (5,442.49 km) |
| Owings Mills to Palmers Green | 3,630.29 mi (5,842.38 km) |
| Owings Mills to Parkstone | 3,574.51 mi (5,752.62 km) |
| Owings Mills to Partick | 3,385.66 mi (5,448.69 km) |
| Owings Mills to Patcham | 3,645.55 mi (5,866.95 km) |
| Owings Mills to Peebles | 3,431.61 mi (5,522.64 km) |
