| Niagara Falls to Oswaldtwistle | 3,412.97 mi (5,492.65 km) |
| Niagara Falls to Oswestry | 3,409.14 mi (5,486.47 km) |
| Niagara Falls to Otley | 3,435.91 mi (5,529.56 km) |
| Niagara Falls to Ovenden | 3,432.64 mi (5,524.30 km) |
| Niagara Falls to Oxford | 3,508.10 mi (5,645.74 km) |
| Niagara Falls to Oxted | 3,571.10 mi (5,747.12 km) |
| Niagara Falls to Padbury | 3,514.23 mi (5,655.61 km) |
| Niagara Falls to Padiham | 3,414.79 mi (5,495.57 km) |
| Niagara Falls to Paignton | 3,450.99 mi (5,553.83 km) |
| Niagara Falls to Paisley | 3,288.95 mi (5,293.06 km) |
| Niagara Falls to Palmers Green | 3,556.96 mi (5,724.37 km) |
| Niagara Falls to Parkstone | 3,508.77 mi (5,646.82 km) |
| Niagara Falls to Partick | 3,292.56 mi (5,298.86 km) |
| Niagara Falls to Patcham | 3,576.47 mi (5,755.77 km) |
| Niagara Falls to Peebles | 3,338.76 mi (5,373.21 km) |
