| Niagara Falls to Penne | 4,443.18 mi (7,150.61 km) |
| Niagara Falls to Pergine Valsugana | 4,192.10 mi (6,746.53 km) |
| Niagara Falls to Perugia | 4,353.54 mi (7,006.34 km) |
| Niagara Falls to Pesaro | 4,342.69 mi (6,988.89 km) |
| Niagara Falls to Pescantina | 4,199.36 mi (6,758.21 km) |
| Niagara Falls to Pescara | 4,454.86 mi (7,169.41 km) |
| Niagara Falls to Peschiera del Garda | 4,193.82 mi (6,749.31 km) |
| Niagara Falls to Pescia | 4,252.47 mi (6,843.68 km) |
| Niagara Falls to Petilia Policastro | 4,701.88 mi (7,566.94 km) |
| Niagara Falls to Piacenza | 4,168.10 mi (6,707.90 km) |
| Niagara Falls to Pianella | 4,450.71 mi (7,162.73 km) |
| Niagara Falls to Pianezza | 4,077.09 mi (6,561.44 km) |
| Niagara Falls to Pianiga | 4,246.43 mi (6,833.97 km) |
| Niagara Falls to Piano di Sorrento | 4,538.29 mi (7,303.67 km) |
| Niagara Falls to Pianoro | 4,260.40 mi (6,856.45 km) |
