| Longford to Superior (Colorado) | 4,328.80 mi (6,966.53 km) |
| Longford to Superior (Wisconsin) | 3,535.03 mi (5,689.08 km) |
| Longford to Surprise (Arizona) | 4,918.15 mi (7,915.00 km) |
| Longford to Susanville (California) | 4,810.89 mi (7,742.37 km) |
| Longford to Sussex (Wisconsin) | 3,555.61 mi (5,722.20 km) |
| Longford to Suwanee (Georgia) | 3,828.11 mi (6,160.74 km) |
| Longford to Swansea (Illinois) | 3,839.80 mi (6,179.56 km) |
| Longford to Sweetwater (Florida) | 4,099.08 mi (6,596.84 km) |
| Longford to Sweetwater (Texas) | 4,545.64 mi (7,315.50 km) |
| Longford to Sycamore (Illinois) | 3,625.76 mi (5,835.10 km) |
| Longford to Sylacauga (Alabama) | 3,959.02 mi (6,371.42 km) |
| Longford to Sylvania (Ohio) | 3,448.68 mi (5,550.11 km) |
| Longford to Syosset (New York) | 3,086.20 mi (4,966.76 km) |
| Longford to Syracuse (New York) | 3,093.96 mi (4,979.25 km) |
| Longford to Syracuse (Utah) | 4,502.87 mi (7,246.67 km) |
