| Niagara Falls to Piazza Armerina | 4,672.89 mi (7,520.29 km) |
| Niagara Falls to Piazzola sul Brenta | 4,233.83 mi (6,813.69 km) |
| Niagara Falls to Pietrasanta | 4,231.28 mi (6,809.59 km) |
| Niagara Falls to Pieve di Soligo | 4,236.50 mi (6,817.98 km) |
| Niagara Falls to Pinerolo | 4,076.25 mi (6,560.09 km) |
| Niagara Falls to Pioltello | 4,136.32 mi (6,656.76 km) |
| Niagara Falls to Piombino | 4,282.87 mi (6,892.61 km) |
| Niagara Falls to Piombino Dese | 4,240.33 mi (6,824.14 km) |
| Niagara Falls to Piossasco | 4,077.97 mi (6,562.86 km) |
| Niagara Falls to Piove di Sacco | 4,253.77 mi (6,845.78 km) |
| Niagara Falls to Pisa | 4,247.58 mi (6,835.81 km) |
| Niagara Falls to Pisticci | 4,638.04 mi (7,464.21 km) |
| Niagara Falls to Pistoia | 4,260.62 mi (6,856.81 km) |
| Niagara Falls to Pizzo | 4,692.33 mi (7,551.58 km) |
| Niagara Falls to Podenzano | 4,171.16 mi (6,712.83 km) |
