The longest tube water slide resides in Malaysia. It's simply called “The Longest” and traipses down a canopied mountain inside the Escape Penang amusement park. The slide is 3,645 feet, or the equivalent of 12 football fields, and dwarfs all other water slides in terms of length.

As of 2026, the title for the longest water ride in the world depends on how you categorize "water ride." For traditional water slides, the "Kilimanjaro" at Aldeia das Águas Park Resort in Brazil remains a top contender for height, but the record for sheer length is often held by "The Mammoth" at Holiday World & Splashin' Safari in Indiana, USA, which is a hydromagnetic water coaster stretching over 1,763 feet. However, if we include "transportative" water rides, the Lazy River at many massive waterparks can exceed several miles in length. In the realm of theme park "log flumes," the "Chiapas" at Phantasialand in Germany is often cited for its complex, lengthy track layout and innovative steep drops. Many 2026 travelers are also looking toward new mega-projects in the Middle East, such as Qiddiya in Saudi Arabia, which aims to shatter several "longest and tallest" records with its upcoming water attractions designed to integrate advanced propulsion technology and extended ride times.