| Enniskillen to Silver Firs (Washington) | 4,413.49 mi (7,102.83 km) |
| Enniskillen to Silver Spring (Maryland) | 3,307.09 mi (5,322.24 km) |
| Enniskillen to Silver Springs Shores (Florida) | 3,995.45 mi (6,430.05 km) |
| Enniskillen to Silverdale (Washington) | 4,439.08 mi (7,144.01 km) |
| Enniskillen to Silverton (Oregon) | 4,591.58 mi (7,389.44 km) |
| Enniskillen to Simi Valley (California) | 5,078.46 mi (8,172.99 km) |
| Enniskillen to Simpsonville (South Carolina) | 3,720.34 mi (5,987.30 km) |
| Enniskillen to Sioux City (Iowa) | 3,873.64 mi (6,234.03 km) |
| Enniskillen to Sioux Falls (South Dakota) | 3,834.63 mi (6,171.24 km) |
| Enniskillen to Skokie (Illinois) | 3,578.57 mi (5,759.15 km) |
| Enniskillen to Sleepy Hollow (New York) | 3,086.68 mi (4,967.52 km) |
| Enniskillen to Slidell (Louisiana) | 4,242.70 mi (6,827.97 km) |
| Enniskillen to Smithfield (North Carolina) | 3,526.74 mi (5,675.74 km) |
| Enniskillen to Smithfield (Utah) | 4,434.59 mi (7,136.78 km) |
| Enniskillen to Smithville (Missouri) | 3,961.42 mi (6,375.30 km) |
