| Groslay to Somma Lombardo | 374.84 mi (603.24 km) |
| Groslay to Somma Vesuviana | 813.16 mi (1,308.65 km) |
| Groslay to Sommacampagna | 469.57 mi (755.70 km) |
| Groslay to Sona | 467.59 mi (752.52 km) |
| Groslay to Sondrio | 400.88 mi (645.16 km) |
| Groslay to Sora | 741.46 mi (1,193.26 km) |
| Groslay to Sorbolo | 477.20 mi (767.97 km) |
| Groslay to Soresina | 435.60 mi (701.04 km) |
| Groslay to Sorisole | 409.00 mi (658.22 km) |
| Groslay to Sorrento | 823.53 mi (1,325.34 km) |
| Groslay to Sorso | 642.25 mi (1,033.60 km) |
| Groslay to Sortino | 1,034.89 mi (1,665.50 km) |
| Groslay to Soverato Marina | 1,000.87 mi (1,610.74 km) |
| Groslay to Sovicille | 579.30 mi (932.30 km) |
| Groslay to Spello | 645.19 mi (1,038.33 km) |
