| Harrow to Penne | 918.79 mi (1,478.65 km) |
| Harrow to Pergine Valsugana | 648.97 mi (1,044.42 km) |
| Harrow to Perugia | 833.25 mi (1,340.99 km) |
| Harrow to Pesaro | 809.79 mi (1,303.22 km) |
| Harrow to Pescantina | 662.70 mi (1,066.52 km) |
| Harrow to Pescara | 928.20 mi (1,493.79 km) |
| Harrow to Peschiera del Garda | 658.61 mi (1,059.93 km) |
| Harrow to Pescia | 736.46 mi (1,185.22 km) |
| Harrow to Petilia Policastro | 1,191.66 mi (1,917.79 km) |
| Harrow to Piacenza | 644.56 mi (1,037.32 km) |
| Harrow to Pianella | 925.89 mi (1,490.08 km) |
| Harrow to Pianezza | 575.16 mi (925.63 km) |
| Harrow to Pianiga | 704.70 mi (1,134.10 km) |
| Harrow to Piano di Sorrento | 1,031.63 mi (1,660.25 km) |
| Harrow to Pianoro | 732.74 mi (1,179.23 km) |
