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Should your 300 hurdler learn to lead with both legs?

Yes, and the time to start was the part of the season where it cost nothing, which is never the week you discover you need it.

It comes up mid-season, usually after a race that fell apart in the last hundred metres. The athlete met hurdle six on the wrong foot, stuttered, and never got the rhythm back. Somebody says they should learn the other lead. They are right, and February was the time to do it.

Why the long hurdles do this to you

The barriers in the 300 and the 400 sit a fixed 35 metres apart. The athlete's stride is fixed at nothing. It is longer in the first half than the second, longer with a tailwind behind it, longer in a final than in a heat, and shorter every time they tire. A pattern that fits perfectly at hurdle two does not necessarily fit at hurdle seven.

The counting decides the rest. An odd number of steps between barriers brings the athlete back to the same lead leg. An even number arrives on the other one. So a hurdler with only one lead is locked into odd patterns, and when fatigue stretches the gap past what their pattern covers, their choices are to reach for it, chop a short step in, or take the barrier off a leg they have never practised.

What the second lead actually buys

The cost is real, which is why it needs its own place in the calendar rather than a panicked Tuesday in May. A new lead is slower, less confident and less comfortable at first, and drilling it during a competition week leaves an athlete thinking about their legs in the middle of a race. It is also no use at all in the 100 and 110 hurdles, where the spacing is fixed and the pattern is three steps for anyone competitive. This is a long hurdles project.

Teaching it without denting anybody's confidence

Drop the barriers and widen the spacing, so getting over the second side does not require bravery. Walkovers on both leads, then run-throughs, then the same thing at competition height once it stops looking like a new event. The step most programmes skip is putting the second lead where it will really be used: in the back half of a rep, when the athlete is tired and the stride has already shortened. A lead that works fresh and fails at hurdle seven has not been learned yet.

Alternating over a single barrier, one lead then the other, is the cheapest drill available and the first one to get dropped.

What film adds, and what it cannot

Film both leads and compare them. The hurdles setting reports trunk dip over the barrier, lead-leg extension, how far the hips rise at the hurdle, and overstride between barriers. The question is not whether the second lead looks worse, because it will. The question is which number is furthest apart between the two sides, because that is the one to work on.

The usual pattern is less trunk dip and more hip rise on the weaker side, which is the app's way of saying the athlete is jumping that barrier rather than running over it. It flags a rise past about 22 per cent of body height, and a dip under about 35 degrees, and the drills that arrive with those findings, close-spacing run-throughs and walkover leads, are the right answers for a second lead as well.

It does not know which leg is leading, and it will not notice that the athlete changed lead halfway through a clip. You label the clips. It compares the numbers.

One camera sees the near side of an athlete. Film the second lead from the other side of the lane if you want a fair view of it, or you are comparing a clear view of one lead with a half-hidden view of the other and calling the difference technique.

Time your next meet with the phones you already have

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Try it: Hurdle technique analysis from video: trunk dip, lead leg, hip rise