| Ionia to Sestu | 4,629.55 mi (7,450.55 km) |
| Ionia to Settimo Torinese | 4,336.85 mi (6,979.49 km) |
| Ionia to Seveso | 4,371.15 mi (7,034.69 km) |
| Ionia to Sezze | 4,700.36 mi (7,564.51 km) |
| Ionia to Siano | 4,796.46 mi (7,719.16 km) |
| Ionia to Siena | 4,553.32 mi (7,327.86 km) |
| Ionia to Signa | 4,524.71 mi (7,281.81 km) |
| Ionia to Silea | 4,494.10 mi (7,232.56 km) |
| Ionia to Silvi Paese | 4,697.01 mi (7,559.10 km) |
| Ionia to Sinalunga | 4,573.65 mi (7,360.59 km) |
| Ionia to Siniscola | 4,601.37 mi (7,405.19 km) |
| Ionia to Sinnai | 4,634.14 mi (7,457.92 km) |
| Ionia to Siracusa | 4,987.53 mi (8,026.66 km) |
| Ionia to Solaro | 4,370.17 mi (7,033.11 km) |
| Ionia to Soliera | 4,478.32 mi (7,207.15 km) |
