As of early 2026, the world record for the most inversions on a single roller coaster is held by The Smiler at Alton Towers in the United Kingdom. This steel "Infinity Coaster" features a staggering 14 inversions, including heartline rolls, corkscrews, and dive loops. It was designed to push the limits of psychological and physical endurance, with the layout specifically engineered to keep riders disoriented. For several years, there have been rumors of a "15-inversion" coaster in development in China, but The Smiler remains the reigning champion in operation. To put this in perspective, most "extreme" coasters feature between 4 and 7 inversions. The 14 loops on The Smiler subject riders to significant G-forces and a non-stop barrage of "head-over-heels" moments. While other coasters hold records for height or speed (like Kingda Ka or Formula Rossa), the "inversion crown" is a testament to complex, tangled track design and the technical ability to maintain enough momentum to clear 14 distinct loops.