To do the splits, you'll need to consistently stretch your hamstrings, hip flexors, and glutes. Stretches for the splits include the butterfly, piriformis, and kneeling hip flexor stretch.
If you're not quite bendy enough to strike the pose (it me), you might think the splits are reserved for a select few elite. Don't count yourself out so quickly. Anyone, from stretching newbies to ...
If you've been hitting back squats hard, it may be time to introduce a different exercise: the Bulgarian split squat.