| Killarney to Silver Firs (Washington) | 4,476.23 mi (7,203.80 km) |
| Killarney to Silver Spring (Maryland) | 3,263.13 mi (5,251.49 km) |
| Killarney to Silver Springs Shores (Florida) | 3,935.86 mi (6,334.16 km) |
| Killarney to Silverdale (Washington) | 4,502.34 mi (7,245.82 km) |
| Killarney to Silverton (Oregon) | 4,649.98 mi (7,483.42 km) |
| Killarney to Simi Valley (California) | 5,109.02 mi (8,222.18 km) |
| Killarney to Simpsonville (South Carolina) | 3,675.22 mi (5,914.69 km) |
| Killarney to Sioux City (Iowa) | 3,877.74 mi (6,240.62 km) |
| Killarney to Sioux Falls (South Dakota) | 3,842.16 mi (6,183.36 km) |
| Killarney to Skokie (Illinois) | 3,564.93 mi (5,737.21 km) |
| Killarney to Sleepy Hollow (New York) | 3,042.95 mi (4,897.15 km) |
| Killarney to Slidell (Louisiana) | 4,202.80 mi (6,763.75 km) |
| Killarney to Smithfield (North Carolina) | 3,475.45 mi (5,593.20 km) |
| Killarney to Smithfield (Utah) | 4,466.33 mi (7,187.87 km) |
| Killarney to Smithville (Missouri) | 3,953.85 mi (6,363.10 km) |
