| Port Huron to San Maurizio Canavese | 4,221.59 mi (6,794.00 km) |
| Port Huron to San Mauro Pascoli | 4,458.83 mi (7,175.79 km) |
| Port Huron to San Mauro Torinese | 4,230.90 mi (6,808.98 km) |
| Port Huron to San Michele al Tagliamento | 4,414.20 mi (7,103.97 km) |
| Port Huron to San Miniato | 4,412.46 mi (7,101.18 km) |
| Port Huron to San Pancrazio Salentino | 4,833.68 mi (7,779.05 km) |
| Port Huron to San Pietro in Casale | 4,393.87 mi (7,071.25 km) |
| Port Huron to San Pietro Vernotico | 4,839.44 mi (7,788.33 km) |
| Port Huron to San Prisco | 4,660.37 mi (7,500.14 km) |
| Port Huron to San Remo | 4,281.13 mi (6,889.82 km) |
| Port Huron to San Salvo | 4,637.62 mi (7,463.53 km) |
| Port Huron to San Sebastiano al Vesuvio | 4,674.47 mi (7,522.83 km) |
| Port Huron to San Severino Marche | 4,525.18 mi (7,282.58 km) |
| Port Huron to San Severo | 4,678.78 mi (7,529.77 km) |
| Port Huron to San Valentino Torio | 4,685.99 mi (7,541.37 km) |
