The Case for Skiing the Blue Square: Why Intermediate Terrain Is the Real Test

Here's a contrarian claim that will get me thrown out of the lodge: the black diamond is overrated. The double black diamond is a marketing gimmick. And the blue square—the humble, unglamorous intermediate run—is where skiing actually gets difficult. If you want to call yourself an expert, don't point to your conquest of a chute; point to your ability to ski a mogul field at 25% gradient with perfect control and zero fear. That's the real test.

Blue Squares Are Where the Numbers Live

Consider the terrain itself. A blue square marks intermediate slopes with gradients commonly around 25% to 40% (Ski trail ratings). That's not trivial. It's steep enough to require real technique, but not so steep that you can simply brake and pray. Meanwhile, black diamonds are 40% and steeper (Ski trail ratings), and double black diamonds add cliffs and rocks (Ski trail ratings). But here's the dirty secret: these ratings are relative to each individual resort, not standardized nationally (Ski trail ratings). A blue square at Vail might be a black diamond at a small Midwest hill. So when you brag about skiing a black diamond, you're really bragging about a local grading decision, not a universal skill.

The Danger Is Hidden in the Middle

Now, let's talk about safety—because that's where the blue square really shines. NSAA reported 63 catastrophic injuries at U.S. ski areas during the 2024/25 season, and the most common factor was male skiers on more difficult (intermediate) terrain, with speed and loss of control as primary causes (NSAA catastrophic injury fact sheet). That's right: the majority of catastrophic incidents happen on intermediate terrain, not expert runs. Why? Because intermediate skiers have enough confidence to go fast, but not enough skill to stop or turn effectively in a crisis. And tree collisions, the leading cause of ski-area fatalities, account for nearly half of all reported deaths (NSAA fatal incident fact sheet). Trees don't care if you're on a blue or a double black; they'll hurt you just the same.

The Counterargument: Black Diamonds Are the Real Challenge

Of course, the standard rebuttal is: “Black diamonds are steeper, more technical, and require more skill.” True, they are steeper and more technical. But that's precisely the point. On a black diamond, the terrain does the work—it forces you to react, to stay in balance, to commit to every turn. On a blue square, you have to manufacture your own challenge. You have to choose your line, modulate your speed, and maintain precision over a longer, less dramatic pitch. That takes more discipline, not less. And if you can't ski a blue square with the same focus you'd bring to a black diamond, you're not an expert—you're just a thrill-seeker.

What I'd Actually Do

Here's my concrete recommendation: next time you're at a resort, skip the black diamond entirely. Spend a full day on blue squares, but ski them like they're double blacks. Pick the narrowest line, the iciest patch, the most moguled section—and ski it with perfect form. Time yourself, and then try to beat that time while keeping your skis parallel. That's the technique drill that will actually make you a better skier. And if you're worried about missing out on the adrenaline, remember that the avalanche danger scale—which applies to backcountry, not resorts—rates Considerable danger as a time when human-triggered avalanches are likely (Avalanche danger scale). That's the kind of risk you don't need to seek out. On a blue square, the only thing you're risking is your pride.

Sources

• Ski trail ratings - https://nsaa.org
• NSAA catastrophic injury fact sheet - https://nsaa.org/webdocs/Media_Public/IndustryStats/catastrophic_injury_fact_sheet_2025.pdf
• NSAA fatal incident fact sheet - https://nsaa.org/webdocs/Media_Public/IndustryStats/fatality_fact_sheet_2025.pdf
• Avalanche danger scale - https://avalanche.org