Giant Slalom Technique: Build Pressure, Hold the Line

Giant slalom technique for advanced skiers: early pressure build-up, outside ski, line through the gate. With racing data, the speed limit and safety check.

Sport: Skifahren · Level: Pro

Introduction

Giant slalom (GS) technique means: medium to large, fully carved radii through gates, with early pressure build-up and a high edge angle. The honest answer to “How do I ski GS?”: you don’t ski turns around gates, you ski a line that runs through the gates – and the pressure builds before you reach the gate and peaks after it.

This is a pro skill. The measurement data come from racing, so TRANSFER: among World Cup skiers, turn forces were largest in giant slalom, larger than in super-G and downhill, and injuries in giant slalom might be related to high turning loads [1]. For you this means: GS is demanding for body and material and should not happen on the side.

How hard is it? It is the interplay of edge angle, pressure, line and speed. How long you need, no study tells.

What you need

• Clean race carving in medium and large radii (practice standard).
• Suitable skis and boots: sidecut affects forces: in a field test with six skiers on giant slalom skis (30, 35, 40 m sidecut), ground reaction forces were larger on the tighter ski [3].
• A closed-off training slope with gates or poles, groomed and without public traffic (practice).
• A helmet and protection suited to gate training (practice, your club’s requirement).
• Fitness and leg strength: GS demands pressure through the whole turn (practice).

Step by step

1. Line before edge

Look at the course: where is the next gate? Ski a line that starts early and sets the apex after the gate (practice). A study of World Cup giant slalom courses shows: how the gates are set determines speed too [2].

2. Edge early

Edge the skis early, before you reach the gate. The pressure should build, not arrive suddenly (practice). Milestone: you ski five gates in a row with round pressure build-up and no hard edge changes.

3. Outside ski dominates

The outside ski carries more load in the turn than the inside ski – pressure measurements on eleven skiers in a giant slalom showed this. The differences between turn phases and between flat and steep sections appeared only on the outside foot [4]. Load the outside ski deliberately.

4. Pressure largest after the gate

Ground reaction force was highest in the second steering phase, after the gate [4]. So hold the pressure into the exit instead of losing it at the gate. Milestone: you feel the greatest pressure after the gate, not before.

5. Let pressure travel from front to back

During the turn, the load on the outside foot moves from the forefoot at turn initiation to the heel in the second steering phase, to varying degrees depending on slope [4]. This transition should run smoothly.

6. Match speed to ability

There is a speed limit beyond which you can’t apply additional force: above this “velocity barrier” skiers could no longer increase force output; higher entry speed led to more energy dissipation and a longer path [6]. More speed is therefore not automatically faster.

Common mistakes

• Pressure too late. You push in the gate instead of building before it. Fix: edge earlier.
• Inside ski loaded too much. Fix: outside ski dominates [4].
• Force toward the inside instead of the turn centre. In a study of 15 skiers, better course times went with greater radial force [5]. Fix: build force toward the turn centre, not just more force.
• Speed beyond the barrier. Fix: increase speed in training as long as the pressure stays clean [6].
• Gate offset too large. More horizontal gate distance reduces speed but raises forces and reduces the minimum radius [2]. Fix: choose a moderate gate offset.

Safety notes

• Forces are high. World Cup giant slalom shows the largest turning forces of the disciplines [1]. On the tighter ski (30 m), ground reaction forces were larger, a hint at self-steering, which plays a central role in cruciate ligament rupture in racing [3].
• Set the course with care. Whoever shortens the vertical gate distance can reduce speed without higher forces being reported for it; a larger horizontal gate distance lowers speed but raises peak force and impulse [2].
• Control before speed. FIS Rule 2 requires you to adapt speed and way of skiing to your ability and the conditions [8].
• Gate training only in a closed-off area. Training on the normal piste endangers others (practice).
• This guide explains and motivates, but does not replace supervised training.

Pro tip

The direction of the force matters, not only its size. The study with 15 skiers shows: more radial force, i.e. force toward the turn centre, depends both on more total force and on more effective force orientation [5]. For you this means: don’t push harder, align edge and body position so that the force works into the turn. A video from behind tells you whether the ski tracks are clean.

And one word on air drag: it accounts for only about 5–28 % of the energy loss per turn [7]. The authors infer that reducing ski–snow friction can improve performance [7] – so in giant slalom clean edges and line count for more than the tuck.

FAQ

What is giant slalom technique?

Medium to large, fully carved radii through gates, with early pressure build-up and a high edge angle. You don’t ski a turn around the gate but a line through the gates. In one measurement, ground reaction force was highest in the steering phase after the gate [4].

How do I put pressure on the gate?

Edge early, load the outside ski deliberately and hold the pressure into the exit. The highest ground reaction force occurred after the gate passage, not before. On the outside foot the pressure moves from the forefoot to the heel – let this transition run smoothly [4].

Is giant slalom dangerous for the knees?

Forces are high in giant slalom, and injuries might be related to high turning loads. Gate distance and sidecut affect the forces: a tighter ski produced larger ground reaction forces. So train only on closed-off courses, with a helmet and suitable equipment, and stop when your legs get tired [1][2][3].

Am I faster if I carry more speed?

Not without limit. Above the velocity barrier, force output could no longer be increased; energy dissipation and path length grew. More speed therefore does not automatically mean more time gained – increase it in training only as long as the pressure stays clean and your line stable [6].

Key Takeaways

• In GS you build pressure before the gate and hold it until after the gate – ground reaction force was highest there [4].
• The outside ski carries the load; on the outside foot the pressure moves from the forefoot to the heel [4].
• Above a “velocity barrier” force cannot be increased further – more speed brings more energy loss, not more time [6].

Next guide

Hop Turn: Unweight, Rotate, Land – With Clear Limits

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