Alpine Skiing Rules: What Actually Counts as Passing a Gate

The rule that explains why racers hit the poles

Canoe slalom prices the same trade explicitly, at two seconds a touch — see canoe slalom penalties.

Watch a slalom and it looks like the skier is fighting the course furniture — arms and shins battering poles aside on every turn. That looks like a lot of contact for a sport with gates.

It is entirely legal, and the rule explains why.

Both ski tips and both feet must pass between the two poles. That is the whole requirement. The rest of the body may hit the panel and push it aside.

So a racer’s optimal line takes the skis as close to the pole as possible while the body goes somewhere the skis are not — through the gate, not around it. Hitting the pole is not a mistake being tolerated. It is the efficient execution of the rule as written.

Straddling is the end of your race

The corresponding failure has a name and no discretion attached.

Straddling — one ski passing on each side of a pole — is an automatic disqualification.

It is easy to see why it must be. If the skis go either side, the racer has not passed through the gate at all; they have passed around it, which is the shorter line the gate exists to prevent.

Missing a gate is survivable, if you climb

That is rarer than it sounds. Most sports treat an error as final — a false start in athletics ends the race with no remedy at all, and a swimmer who moves early may have to complete a race they have already lost.

Alpine skiing offers something unusual: a remedy.

A racer who misses a gate may hike back up the hill and pass it correctly. Only if they fail to do so are they disqualified and excluded from the results.

In practice this almost always ends any chance of a competitive time — climbing back up a race course costs seconds nobody can spare. But the rule is not merely symbolic. It preserves the principle that the offence is failing to pass the gate, not failing to pass it first time.

Very few sports allow an athlete to repair an error mid-competition. Most treat a mistake as final and score it.

The four disciplines are one variable

Downhill, Super-G, giant slalom and slalom are usually explained as four separate events. They are better understood as one course design parameter, set to four different values: how far apart the gates are.

Discipline	Gate spacing
Downhill	widest — gate width at least 8m
Super-G	open gates 6–8m; vertical gates 8–12m
Giant slalom	4–8m, with at least 10m between successive turning poles
Slalom	tightest, and the most gates of the four

Everything else follows from that single number. Wider gates mean fewer turns, higher speeds and a course that rewards line and nerve. Tighter gates mean more turns, lower speeds and a course that rewards edge control and rhythm.

The sport did not design four disciplines and then choose gate spacings. It chose gate spacings, and four disciplines emerged.

The drop is specified too

Course length is not left to the hill. FIS sets vertical drop ranges, and they differ by sex — a giant slalom course must drop 250–450m for men and 250–400m for women, with 56–70 gates for men and 46–58 for women.

That is a governing body specifying both the terrain and the number of decisions a racer must make on it. A course is not simply a mountain with poles on it; it is a set of parameters, and the hill has to accommodate them.

This is the same instinct as World Athletics requiring certified facilities before a record can be ratified: performances are only comparable if the thing they were performed on is specified.

More rulebook coverage is in rules and techniques.