My first son was 40 inches at 2.5. He rode Splash Mountain our last trip (he had JUST turned 3 and was 42 inches). But he doesn't want to ride it again. He'll be 4 in two weeks and is 46 inches. He's not the brave one. Youngest son (21 months) is JUST 35 inches (for Barnstormer) He's the brave one, but he's much shorter than the older one.