Ski run colors explained, green to black
Ski runs are color graded from easiest to hardest. In Europe the order is green, blue, red, then black. In North America it is green circle, blue square, black diamond, then double black diamond. The colors are a relative guide set by each resort, not a fixed measurement, so read them within one resort and calibrate on a few easy runs before you trust the map.
By the Ski Resorts for Kings editorial team · Last reviewed June 2026
The short answer: green is easiest and black is hardest, with blue and red in between, and the main trap is assuming the grades are identical everywhere. Europe splits intermediate terrain into blue and red, while North America folds both into the blue square. Learn the order, learn how the two systems line up, and ski conservatively at a new resort until you know how that mountain grades.
The European system, green to black
European resorts grade pistes in four colors. Green is the gentlest beginner terrain, often the nursery area and the easiest green runs. Blue is an easy, well groomed run that a new skier graduates to once they can turn and stop. Red is intermediate, steeper and sometimes narrower, the bread and butter of a confident holiday skier. Black is advanced, steep and demanding, and may be left ungroomed.
Some countries add detail. France uses all four colors widely, Austria and Switzerland sometimes skip green and start at blue, and Italy uses blue, red and black with fewer greens. A handful of resorts mark the very hardest pistes with extra signage. The order never changes though: green is always easiest and black is always hardest.
The North American system, circles and diamonds
North America grades by shape and color rather than four flat colors. A green circle is easy, a blue square is intermediate, a black diamond is advanced and a double black diamond is expert. Some large resorts also use a single black with two diamonds informally for the most serious terrain, and terrain parks carry an orange oval.
The key difference is that North America has no separate red grade. Everything Europe splits into blue and red is covered by the American blue square, which therefore spans a wider range of difficulty. An American blue can feel like a European red, so European intermediates should not assume every blue square is gentle.
How the two systems line up
This is the table to keep in your head when you switch continents. It is approximate, because grades are relative, but it gets you close.
| Ability | Europe | North America |
|---|---|---|
| Beginner | Green | Green circle |
| Easy | Blue | Easier blue square |
| Intermediate | Red | Blue square to easy black diamond |
| Advanced | Black | Black diamond |
| Expert | Hardest black or itinerary route | Double black diamond |
The single most useful rule: a European black and a North American single black diamond are broadly similar, and a double black diamond is harder than almost anything graded in Europe. If you ski comfortable reds at home, you will be fine on most American blues and the gentler blacks.
How to read a piste map and pick your runs
Grades are set by each resort relative to its own terrain, so a blue at a steep, high resort can be tougher than a red at a gentle one. The fix is simple: at a new resort, ski one or two easy runs first to feel how that mountain grades before you commit to anything harder. Watch the time of day too, since a groomed red in the morning can turn icy or bumpy by mid afternoon.
Beginners should stay on greens and the nursery area, then move to blues once turning and stopping are reliable. A few lessons are the fastest, safest way to climb the colors, and our first ski holiday guide covers how to start. Choosing where to ski by ability is the heart of our how to choose a ski resort guide.
For gentle, confidence building terrain, big beginner friendly resorts like Courchevel and Saalbach have acres of greens and blues, while expert magnets like St Anton are stacked with reds and blacks. Browse families friendly picks in our best family resorts in the Alps list.
The action: match the colors to your group
Before you book, sketch the colors your group can ski and check a resort actually has enough of them. A week of pure greens frustrates strong skiers, and a wall of blacks intimidates beginners, so the run split matters as much as the headline size. Tell us the abilities in your party and we will help match the mountain, or read on and we will route your brief to operators who price the whole trip.
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Questions worth asking
What do the ski run colors mean?
Ski run colors grade difficulty from easiest to hardest. In Europe the order is green for beginner, blue for easy, red for intermediate and black for advanced. In North America it is green circle for easy, blue square for intermediate and black diamond, then double black diamond, for advanced and expert. The colors are a relative guide, not a fixed standard.
Is a red run hard?
A red run is an intermediate grade in Europe, steeper and often narrower than a blue but not expert terrain. It roughly matches a North American blue square or an easier black diamond. A confident intermediate who can link turns and control speed should be comfortable on most reds.
What is the difference between European and American ski run grades?
Europe uses green, blue, red and black, while North America uses green circle, blue square, black diamond and double black diamond. North America has no separate red grade, so its blue square spans what Europe splits into blue and red. A European black and an American single black diamond are broadly similar.
Are ski run colors the same at every resort?
No. Grades are set by each resort relative to its own terrain, so a blue at a steep, high resort can feel harder than a red at a gentle one. Treat the colors as a guide within a single resort and ski a couple of easier runs first to calibrate before trusting the map.
What color run should a beginner ski?
Beginners start on green runs and the nursery area, then progress to blue runs once they can turn and stop reliably. Avoid reds and blacks until you can control speed and link turns on a blue without trouble. A lesson is the fastest way to move up the colors safely.
What is a double black diamond?
A double black diamond is a North American expert grade, steeper and more serious than a single black diamond, often involving moguls, narrow chutes or ungroomed terrain. Europe has no exact equivalent, though the hardest blacks and marked itinerary routes are comparable. Only strong, confident skiers should drop into one.
What is an orange or yellow ski run?
Some resorts use extra colors for ungroomed or off piste terrain. Yellow or orange usually marks a patrolled but unpisted itinerary route that is not groomed or avalanche controlled like a normal run. Treat these as off piste in spirit and only ski them with the right experience and equipment.