| Niagara Falls to Poggibonsi | 4,288.35 mi (6,901.43 km) |
| Niagara Falls to Poggio a Caiano | 4,271.32 mi (6,874.03 km) |
| Niagara Falls to Poggio Renatico | 4,251.82 mi (6,842.65 km) |
| Niagara Falls to Poggiomarino | 4,537.20 mi (7,301.91 km) |
| Niagara Falls to Poirino | 4,096.43 mi (6,592.57 km) |
| Niagara Falls to Policoro | 4,650.68 mi (7,484.55 km) |
| Niagara Falls to Polistena | 4,702.37 mi (7,567.74 km) |
| Niagara Falls to Pomezia | 4,415.87 mi (7,106.66 km) |
| Niagara Falls to Pomigliano d'Arco | 4,526.09 mi (7,284.04 km) |
| Niagara Falls to Pompei | 4,537.18 mi (7,301.88 km) |
| Niagara Falls to Ponsacco | 4,261.11 mi (6,857.59 km) |
| Niagara Falls to Pontassieve | 4,288.24 mi (6,901.26 km) |
| Niagara Falls to Ponte Buggianese | 4,257.20 mi (6,851.30 km) |
| Niagara Falls to Ponte San Pietro | 4,139.38 mi (6,661.68 km) |
| Niagara Falls to Pontecorvo | 4,473.04 mi (7,198.66 km) |
