| Welwyn Garden City to Penne | 923.18 mi (1,485.72 km) |
| Welwyn Garden City to Pergine Valsugana | 651.61 mi (1,048.67 km) |
| Welwyn Garden City to Perugia | 838.17 mi (1,348.91 km) |
| Welwyn Garden City to Pesaro | 813.60 mi (1,309.36 km) |
| Welwyn Garden City to Pescantina | 666.39 mi (1,072.45 km) |
| Welwyn Garden City to Pescara | 932.38 mi (1,500.52 km) |
| Welwyn Garden City to Peschiera del Garda | 662.50 mi (1,066.20 km) |
| Welwyn Garden City to Pescia | 742.00 mi (1,194.13 km) |
| Welwyn Garden City to Petilia Policastro | 1,196.52 mi (1,925.61 km) |
| Welwyn Garden City to Piacenza | 649.78 mi (1,045.71 km) |
| Welwyn Garden City to Pianella | 930.24 mi (1,497.07 km) |
| Welwyn Garden City to Pianezza | 582.41 mi (937.30 km) |
| Welwyn Garden City to Pianiga | 707.51 mi (1,138.63 km) |
| Welwyn Garden City to Piano di Sorrento | 1,037.01 mi (1,668.91 km) |
| Welwyn Garden City to Pianoro | 737.28 mi (1,186.53 km) |
