How tall do the kids have to be to ride the rollercoasters??

48 in on some and 52 in for most

Roller coasters require riders to be "48 or taller. Here is the rider information for the major thrill rides - https://www.magicsprings.com/rides-thrill.php Here are the rides that adults may ride with children - https://www.magicsprings.com/rides-family.php and here are the rides for smaller children - https://www.magicsprings.com/rides-kids.php

Most are above or under 48"

I think it's 46-48 inches without a adult 36 with a adult except for the xcoaster and the gauntlet you have to be 48 inches to ride it

4ft