| Cave to Superior (Colorado) | 5,586.71 mi (8,990.95 km) |
| Cave to Superior (Wisconsin) | 4,791.20 mi (7,710.70 km) |
| Cave to Surprise (Arizona) | 6,176.27 mi (9,939.74 km) |
| Cave to Susanville (California) | 6,054.38 mi (9,743.59 km) |
| Cave to Sussex (Wisconsin) | 4,800.16 mi (7,725.11 km) |
| Cave to Suwanee (Georgia) | 5,020.25 mi (8,079.32 km) |
| Cave to Swansea (Illinois) | 5,073.42 mi (8,164.88 km) |
| Cave to Sweetwater (Florida) | 5,213.09 mi (8,389.66 km) |
| Cave to Sweetwater (Texas) | 5,786.82 mi (9,312.99 km) |
| Cave to Sycamore (Illinois) | 4,867.81 mi (7,833.98 km) |
| Cave to Sylacauga (Alabama) | 5,155.79 mi (8,297.43 km) |
| Cave to Sylvania (Ohio) | 4,678.41 mi (7,529.17 km) |
| Cave to Syosset (New York) | 4,277.49 mi (6,883.95 km) |
| Cave to Syracuse (New York) | 4,308.98 mi (6,934.63 km) |
| Cave to Syracuse (Utah) | 5,758.32 mi (9,267.12 km) |
