| Gretna to Pontedera | 5,307.75 mi (8,542.00 km) |
| Gretna to Pontinia | 5,491.82 mi (8,838.24 km) |
| Gretna to Porcari | 5,301.05 mi (8,531.21 km) |
| Gretna to Porcia | 5,314.46 mi (8,552.80 km) |
| Gretna to Pordenone | 5,316.42 mi (8,555.95 km) |
| Gretna to Portici | 5,570.63 mi (8,965.07 km) |
| Gretna to Porto Empedocle | 5,661.41 mi (9,111.17 km) |
| Gretna to Porto Recanati | 5,447.28 mi (8,766.55 km) |
| Gretna to Porto Sant'Elpidio | 5,456.83 mi (8,781.92 km) |
| Gretna to Porto Tolle | 5,336.70 mi (8,588.58 km) |
| Gretna to Porto Torres | 5,301.03 mi (8,531.18 km) |
| Gretna to Portoferraio | 5,322.14 mi (8,565.15 km) |
| Gretna to Portogruaro | 5,329.80 mi (8,577.49 km) |
| Gretna to Portomaggiore | 5,323.22 mi (8,566.90 km) |
| Gretna to Potenza | 5,642.17 mi (9,080.20 km) |
