| Glencullen to Somma Lombardo | 845.85 mi (1,361.26 km) |
| Glencullen to Somma Vesuviana | 1,285.20 mi (2,068.33 km) |
| Glencullen to Sommacampagna | 935.93 mi (1,506.23 km) |
| Glencullen to Sona | 933.80 mi (1,502.80 km) |
| Glencullen to Sondrio | 865.44 mi (1,392.79 km) |
| Glencullen to Sora | 1,213.35 mi (1,952.70 km) |
| Glencullen to Sorbolo | 947.34 mi (1,524.60 km) |
| Glencullen to Soresina | 905.47 mi (1,457.22 km) |
| Glencullen to Sorisole | 877.28 mi (1,411.84 km) |
| Glencullen to Sorrento | 1,295.74 mi (2,085.30 km) |
| Glencullen to Sorso | 1,101.25 mi (1,772.28 km) |
| Glencullen to Sortino | 1,505.51 mi (2,422.88 km) |
| Glencullen to Soverato Marina | 1,473.08 mi (2,370.69 km) |
| Glencullen to Sovicille | 1,051.47 mi (1,692.17 km) |
| Glencullen to Spello | 1,116.27 mi (1,796.46 km) |
