| River Falls to Oswaldtwistle | 3,831.30 mi (6,165.87 km) |
| River Falls to Oswestry | 3,838.97 mi (6,178.22 km) |
| River Falls to Otley | 3,850.30 mi (6,196.47 km) |
| River Falls to Ovenden | 3,849.37 mi (6,194.97 km) |
| River Falls to Oxford | 3,943.69 mi (6,346.76 km) |
| River Falls to Oxted | 4,007.47 mi (6,449.39 km) |
| River Falls to Padbury | 3,946.58 mi (6,351.41 km) |
| River Falls to Padiham | 3,832.28 mi (6,167.45 km) |
| River Falls to Paignton | 3,907.38 mi (6,288.32 km) |
| River Falls to Paisley | 3,689.59 mi (5,937.83 km) |
| River Falls to Palmers Green | 3,990.08 mi (6,421.41 km) |
| River Falls to Parkstone | 3,957.12 mi (6,368.37 km) |
| River Falls to Partick | 3,692.62 mi (5,942.69 km) |
| River Falls to Patcham | 4,017.22 mi (6,465.09 km) |
| River Falls to Peebles | 3,738.18 mi (6,016.03 km) |
