| Portsmouth to San Maurizio Canavese | 557.40 mi (897.05 km) |
| Portsmouth to San Mauro Pascoli | 780.80 mi (1,256.57 km) |
| Portsmouth to San Mauro Torinese | 567.21 mi (912.84 km) |
| Portsmouth to San Michele al Tagliamento | 733.56 mi (1,180.56 km) |
| Portsmouth to San Miniato | 743.81 mi (1,197.05 km) |
| Portsmouth to San Pancrazio Salentino | 1,156.79 mi (1,861.67 km) |
| Portsmouth to San Pietro in Casale | 715.72 mi (1,151.84 km) |
| Portsmouth to San Pietro Vernotico | 1,161.70 mi (1,869.57 km) |
| Portsmouth to San Prisco | 994.68 mi (1,600.78 km) |
| Portsmouth to San Remo | 635.88 mi (1,023.35 km) |
| Portsmouth to San Salvo | 962.95 mi (1,549.71 km) |
| Portsmouth to San Sebastiano al Vesuvio | 1,010.42 mi (1,626.11 km) |
| Portsmouth to San Severino Marche | 849.34 mi (1,366.89 km) |
| Portsmouth to San Severo | 1,003.70 mi (1,615.30 km) |
| Portsmouth to San Valentino Torio | 1,020.86 mi (1,642.91 km) |
