| Niagara Falls to Pontedera | 4,259.32 mi (6,854.71 km) |
| Niagara Falls to Pontinia | 4,449.17 mi (7,160.24 km) |
| Niagara Falls to Porcari | 4,251.74 mi (6,842.52 km) |
| Niagara Falls to Porcia | 4,251.27 mi (6,841.76 km) |
| Niagara Falls to Pordenone | 4,253.24 mi (6,844.93 km) |
| Niagara Falls to Portici | 4,527.64 mi (7,286.53 km) |
| Niagara Falls to Porto Empedocle | 4,640.23 mi (7,467.73 km) |
| Niagara Falls to Porto Recanati | 4,393.22 mi (7,070.20 km) |
| Niagara Falls to Porto Sant'Elpidio | 4,403.35 mi (7,086.50 km) |
| Niagara Falls to Porto Tolle | 4,278.52 mi (6,885.61 km) |
| Niagara Falls to Porto Torres | 4,274.06 mi (6,878.43 km) |
| Niagara Falls to Portoferraio | 4,278.85 mi (6,886.14 km) |
| Niagara Falls to Portogruaro | 4,266.99 mi (6,867.06 km) |
| Niagara Falls to Portomaggiore | 4,267.23 mi (6,867.44 km) |
| Niagara Falls to Potenza | 4,596.31 mi (7,397.04 km) |
