Learn the split leap: flexibility check, build-up from the stride leap, the judges' 180° standard and mistakes like a twisted hip or not enough split.
The split leap is a jump in which you open your legs front-back to a full split (180° leg separation) in the flight phase and then land on one or both feet. In the FIG women's rules, a leg separation of 180° is prescribed for jumps and leaps with a split [1].
The honest answer to "How hard is it?": The split on the floor is the entry ticket, the leap is the exam. In the air you have less time to open the legs than you think. Your advantage is that the jump consists of take-off power, flexibility and timing, not courage alone.
The rules make the benchmark concrete. If 0 to 20° are missing from the full split in flight, there is a small deduction, at 20 to 45° a medium one, and beyond 45° the jump counts as a different element [1]. For comparison: 180° is a straight line from toe to toe, 160° already looks almost straight and is still deducted.
And one more study that shows why you should practise both sides: twelve professional female ballet dancers (all right-legged) jumped the related grand jeté higher and longer when landing on the dominant leg. The split angle and the impact forces did not differ [2]. It is a small study of professionals; the message for you is our extension: your "weak" side can be trained, it is not fate.
Test the split on the floor, left and right. The pelvis faces forward, the hip is not twisted (practice). Milestone: both sides 20 seconds without pain, up to a hand's width above the floor at most.
Take off from one leg, open the legs a little in flight and land on the other. Leaps start from one foot [1]. Milestone: five stride leaps per side, calm landing.
Take off from both feet and open both legs to the split in flight. Jumps start from both feet and may land on one or two [1]. Milestone: in the side video you see a straight line in the air of at least about 160°.
Two to three steps of run-up, take-off from one leg, split in flight, landing on the other leg [1]. Milestone: three leaps per side with at least 160° in the air.
Repeat both sides in alternation. The dominant side feels easier, the other can be trained [2]. Milestone: both sides similarly high and far, compared on video.
Put a line of tape across the floor and use it as a split check: take off in front of it, land behind it, eyes on the horizon. In the side video you then see two things: where do you take off, and is the line of your legs parallel to the floor? That is a practice trick, not a study finding.
The women's rules require 180° leg separation. Up to 20° missing gives a small deduction, up to 45° a medium one, beyond that another element is credited [1].
In a jump you take off from both feet, in a leap from one foot and land on the other or on both [1]. In both cases the full split is required [1].
Practically yes. Whoever does not have a full split on the floor cannot show it in the air [1]. Practise flexibility first, then the jump.
Yes. In a study of professional ballet dancers the dominant side was higher and farther, but the split angles were equal [2]. Train the weaker side just as often.
That depends on your flexibility. With a split on the floor it is often a few weeks of consistent practice. That is an experience-based estimate, not a study figure.
Learning the Pirouette: Spinning on One Leg and Staying Standing