Popsugar Parenting Toddlers Disney World Magic Kingdom Ride Height Requirements These Are the Height Requirements For Every Single Ride at Disney's Magic Kingdom 28 May 2018 by Caitlyn Fitzpatrick View On One Page Photo 3 of 20 ADVERTISEMENT () Start Slideshow A post shared by Kristin 🏰 (@kp_loves_disney) on Apr 3, 2018 at 6:03pm PDT Share This Link Copy ← Use Arrow Keys → 3 Big Thunder Mountain Railroad in Frontierland You must be at least 40" to go on this ride. Previous Next Start Slideshow ToddlersLittle KidsFamily TravelWalt Disney WorldKidsTravelDisney