| Plougastel-Daoulas to Settimo Torinese | 615.77 mi (990.99 km) |
| Plougastel-Daoulas to Seveso | 662.75 mi (1,066.60 km) |
| Plougastel-Daoulas to Sezze | 972.92 mi (1,565.77 km) |
| Plougastel-Daoulas to Siano | 1,069.87 mi (1,721.79 km) |
| Plougastel-Daoulas to Siena | 830.48 mi (1,336.53 km) |
| Plougastel-Daoulas to Signa | 804.59 mi (1,294.86 km) |
| Plougastel-Daoulas to Silea | 805.57 mi (1,296.43 km) |
| Plougastel-Daoulas to Silvi Paese | 978.84 mi (1,575.30 km) |
| Plougastel-Daoulas to Sinalunga | 851.48 mi (1,370.32 km) |
| Plougastel-Daoulas to Siniscola | 875.92 mi (1,409.65 km) |
| Plougastel-Daoulas to Sinnai | 919.62 mi (1,479.99 km) |
| Plougastel-Daoulas to Siracusa | 1,260.80 mi (2,029.06 km) |
| Plougastel-Daoulas to Solaro | 661.07 mi (1,063.89 km) |
| Plougastel-Daoulas to Soliera | 767.29 mi (1,234.83 km) |
| Plougastel-Daoulas to Solofra | 1,075.26 mi (1,730.46 km) |
