| Glencullen to Smyrna (Delaware) | 3,310.08 mi (5,327.05 km) |
| Glencullen to Smyrna (Georgia) | 3,926.60 mi (6,319.25 km) |
| Glencullen to Smyrna (Tennessee) | 3,903.47 mi (6,282.03 km) |
| Glencullen to Snellville (Georgia) | 3,906.32 mi (6,286.61 km) |
| Glencullen to Snoqualmie (Washington) | 4,520.00 mi (7,274.23 km) |
| Glencullen to Snyder (Texas) | 4,625.36 mi (7,443.79 km) |
| Glencullen to Socastee (South Carolina) | 3,712.15 mi (5,974.13 km) |
| Glencullen to Socorro (Texas) | 4,881.79 mi (7,856.48 km) |
| Glencullen to Soddy-Daisy (Tennessee) | 3,884.48 mi (6,251.47 km) |
| Glencullen to Solana Beach (California) | 5,194.03 mi (8,358.98 km) |
| Glencullen to Soledad (California) | 5,130.79 mi (8,257.21 km) |
| Glencullen to Solon (Ohio) | 3,447.82 mi (5,548.73 km) |
| Glencullen to Somers Point (New Jersey) | 3,268.53 mi (5,260.19 km) |
| Glencullen to Somerset (Kentucky) | 3,773.63 mi (6,073.07 km) |
| Glencullen to Somerset (New Jersey) | 3,210.97 mi (5,167.55 km) |
