| Severn to Oswaldtwistle | 3,504.67 mi (5,640.23 km) |
| Severn to Oswestry | 3,494.59 mi (5,623.99 km) |
| Severn to Otley | 3,529.44 mi (5,680.09 km) |
| Severn to Ovenden | 3,524.96 mi (5,672.87 km) |
| Severn to Oxford | 3,589.12 mi (5,776.13 km) |
| Severn to Oxted | 3,650.93 mi (5,875.60 km) |
| Severn to Padbury | 3,596.99 mi (5,788.79 km) |
| Severn to Padiham | 3,506.92 mi (5,643.84 km) |
| Severn to Paignton | 3,520.75 mi (5,666.09 km) |
| Severn to Paisley | 3,391.63 mi (5,458.31 km) |
| Severn to Palmers Green | 3,638.78 mi (5,856.05 km) |
| Severn to Parkstone | 3,582.52 mi (5,765.51 km) |
| Severn to Partick | 3,395.50 mi (5,464.54 km) |
| Severn to Patcham | 3,653.76 mi (5,880.16 km) |
| Severn to Peebles | 3,441.43 mi (5,538.44 km) |
