Essentials: How To CORNER (Includes 5 Drill progression)
Analyzing Corners.
This is part of GSMBC Essentials, a series answering the questions riders ask most often online. Each entry takes a common topic, breaks it down in plain language, and gives you a clear, practical reference you can put to use the next time you ride. Built on coaching fundamentals. Written for anyone with a bike.
Cornering is the single highest-leverage skill on a mountain bike. Every trail you ride is, when you strip everything else away, a sequence of corners with a few straight bits between them, and the riders who keep getting faster year after year are almost always the ones still working on their cornering. The ones who plateau are usually the ones who decided years ago that their cornering was "fine" and went off chasing bigger jumps and steeper lines instead.
Most cornering plateaus aren't about fitness or courage. They're about a small handful of habits the rider never quite shook from their early days on the bike, most of which are invisible until someone names them. This guide is how we teach cornering inside our courses: the foundational distinction between flat turns and berms, the four phases of a well-ridden corner, the mistakes that quietly steal speed from most riders, and the drill progression you can run in any empty parking lot tomorrow morning.
Flat Corners vs. Berms: The Skill Is Different
Most riders learn one cornering style and try to use it everywhere, which is the root cause of a lot of stuck cornering. A flat corner and a berm reward two different mechanics, and the difference comes down to where the grip is coming from.
On a flat corner, there's no banking to hold you in. Your only source of grip is the contact patch where the tire knobs bite sideways into the dirt, and that bite is maximised when the bike is leaned over while the body stays more upright. Leaning the bike independently of the body opens the angle of the tire's side knobs into the ground, weights the outside foot, and keeps your centre of mass over the contact patch rather than out beyond it.
On a berm, the banking does the work for you. The wall of the corner pushes back against the bike, and the grip is no longer about side-knob bite; it's about driving the bike into the bank and letting the bank return the energy. On a berm you want the bike and the body roughly stacked together, leaned as a single unit into the wall, because that's how you load it and how you get pumped back out.
This is the part most riders confuse. They take the body-upright, bike-leaned shape they learned on flat corners and try to use it on a berm, and the bike feels skittish and light. Or they take the stacked-and-leaned shape they learned on berms and try to use it on a flat corner, and the front tire washes out. Same rider, same bike, same trail; the technique has to change with the corner.
The Cornering Setup: Vision, Brakes, Body
Every well-ridden corner has four phases (approach, entry, apex, exit), and what your eyes, brakes, and body are doing in each phase is what separates a fast corner from a slow one.
On the approach, your eyes are already past the entry of the corner, scanning for the apex and the exit. Your braking is happening here, before the turn, not in it. This is the single most undervalued part of cornering, because it's the part that doesn't feel like cornering yet. The good riders are mentally inside the corner while the average riders are still thinking about the straight they're on.
At the entry, the brakes come off and the body sets up. The outside foot drops to the six o'clock position and gets weighted hard, the inside knee opens out toward the apex if you're on a flat corner (or stays tucked in if you're on a berm), the hips move back slightly, and the eyes have already left the entry and gone to the apex.
At the apex, the bike is at maximum lean, the body is doing whatever the corner type requires, and the eyes are now on the exit. You're not looking at the apex when you're at the apex; you're looking past it.
On the exit, the bike comes back upright, the weight comes back onto both pedals, and you're already accelerating, with your eyes scanning forward to the next feature. A good exit is the byproduct of a good entry, not something you can rescue at the last second.
How to Corner a Mountain Bike: The Core Technique
Stripped down to its mechanics, a well-cornered mountain bike does five things in roughly this order.
Your head and eyes lead. Before anything else moves, your eyes go to where you want the bike to be, which is usually further around the corner than feels natural. The body follows the eyes, the bike follows the body. If you only fix one thing about your cornering, fix where you're looking.
Your outside foot is down and weighted. On a flat corner, the bike leans more than your body, with your outside foot at six o'clock and pushed into hard, your inside knee dropped out toward the apex, and your eyes already through the exit. That outside-foot weight is what drives the tire's side knobs into the dirt, and without it you have no grip to lean on.
Your inside knee tells the story. On a flat corner, the inside knee opens out toward the apex, which keeps the hips rotated into the turn and the body more upright than the bike. On a berm, both knees stay tucked in, the body stacks with the bike, and the whole shape leans together into the bank.
Your hips are back, your arms are bent, your brakes are covered but not pulled. Braking happens before the corner, not in it. Once you've committed to the turn the brakes come off, because any braking inside the corner uses up the grip you needed to hold the line. A finger on each lever for safety is fine; squeezing them through the apex is what makes the front wheel wash and the back wheel skid.
That's the whole technique. The hard part isn't the mechanics, it's the timing and the trust it takes to commit to a corner at speed without grabbing the brakes.
Why You're Slow Through Flat Corners
Flat corners are where most riders quietly lose two or three seconds a lap and never figure out why. The fix is rarely about going harder; it's about removing the small habits that are stealing speed.
Most slow flat-corner riders are braking inside the corner, which means they hit the turn with too much speed for their committed line, then bleed off that speed exactly when they needed grip to hold it. They're also usually looking at the front wheel, which pulls the head and hips forward and forces the body to lean before the bike does. They tend to drop the inside foot, because it feels stable, even though it lifts the outside knobs off the ground. And they keep their shoulders square to the bars, which prevents the hips from rotating into the corner.
The result is a rider who feels like they're trying hard but ending each corner wider and slower than they entered it. Fixing one of those habits at a time (the braking, then the eyes, then the outside foot) will move the needle further than any new wheelset, tire compound, or fork upgrade ever will.
How Berms Reward Different Mechanics
Berms are the corner type where riders most often try to use the wrong technique, and the fix is counter-intuitive enough that it's worth saying directly: on a berm, you lean the bike MORE than you lean the body on a flat corner, and the body and bike move together as a single shape into the wall.
The reason comes back to grip. A flat corner asks the tire to bite sideways into dirt, so leaning the bike under a more upright body opens the side knobs into the ground. A berm doesn't need the side knobs; it has a wall doing the work. Instead of separating the bike from the body, you stack them, lean them together, and drive the whole shape into the bank. You then pump the exit by extending the legs against the down-slope of the berm, which is where berm speed actually comes from.
If you're a rider who feels great on berms and washes out on flat turns, you've probably learned the stacked shape and never built the body-bike separation. If you're a rider who corners flat turns cleanly but feels slow and skittish on berms, the opposite is happening: you're holding too much body-bike separation on a feature that wants you to commit as one unit.
The Mistakes That Stall Most Riders
Braking in the corner instead of before it.
Any braking after the entry uses up the grip you needed to hold the line, and the result is a wider exit and lost speed. Get the braking done early, then commit.
Looking at the front wheel.
Your bike follows your eyes, so a downward gaze pulls your weight forward and your line shorter than the corner needs. Eyes go to the apex, then to the exit, before the bike gets there.
Shoulders square to the bars.
Locked shoulders prevent the hips from rotating into the turn, which keeps the body stiff and the bike unable to lean under it. Open the inside shoulder slightly toward the corner exit and the hips will follow.
Inside foot down.
It feels stable, like a kickstand, but dropping the inside foot lifts the outside knobs off the ground and removes the bite that flat corners depend on. Outside foot down, weighted hard, every flat corner.
Leaning the body before the bike on flat corners.
If your body tips into the turn before the bike does, you've put your centre of mass outside the contact patch, and the front tire will wash. The bike leans first, the body stays more upright above it.
Riding the back brake all the way through.
A dragged rear brake reduces the rear tire's grip, makes the back end skip, and prevents the bike from settling into the lean. Brakes off through the apex, on again only at the next braking zone.
The GSMBC Drill Progression
Cornering is built in layers, not in one big practice session, and the way we teach it in our courses is by isolating one piece of the puzzle at a time. Here are the five drills we run most often, ordered from easiest to hardest.
Drill 1: The figure 8.
Find a flat, open piece of pavement or hard-packed dirt and ride a slow figure 8 around two cones (or two water bottles) about four metres apart. Focus on dropping the outside foot, opening the inside knee, and leaning the bike under a more upright body. Don't worry about speed; the goal is to build the shape. Twenty figure 8s in each direction is a single session.
Drill 2: The look-where-you-want-to-go drill.
Same figure 8 setup, but this time force your eyes to the next cone the instant you commit to the current one. The eyes leave the apex before the bike reaches the apex. Most riders find their lines tighten and their speed picks up immediately, with no other change to their technique. This drill is the highest-leverage thing in the list.
Drill 3: Outside foot weighting on a flat corner.
Find a flat corner on a trail or a marked-out turn in a parking lot, and ride it ten times in a row, focusing only on heavy weighting through the outside foot. You should feel the bike settle and the tire bite. If you can't feel the side knobs hooking up, you're not weighting hard enough.
Drill 4: Bike lean vs body lean isolation.
Set up two corners side by side, one ridden as a flat turn (bike leans more than the body) and one ridden as if it were a berm (body and bike stacked, leaning as a unit). Switch back and forth deliberately, naming the shape out loud as you ride it. This is the drill that builds the discrimination most riders never develop on their own.
Drill 5: The rail-the-berm pump session.
Find a single berm with a clean entry and exit, and lap it ten times in a row, each time trying to exit faster than you entered without pedaling. The goal is to learn to pump the berm, extending the legs through the down-slope of the bank to generate speed out of the corner. This is where berm cornering stops being about survival and starts being about acceleration.
Most riders need to come back to this progression repeatedly. Two or three sessions of figure 8s and weighted-foot drills will reshape a corner inside a few weeks, and the rail-the-berm work tends to be a lifelong project.
Coach's Note
Cornering is the clearest example of a teaching principle we come back to in every course: skills aren't just about what you do, they're about where you look.
The eyes lead the body, the body leads the bike. Almost every cornering fault you can name (braking late, washing the front, square shoulders, wide lines) traces back upstream to a rider whose eyes were in the wrong place. They were looking at the front wheel, or at the apex when they should have been past it, or at a root they were afraid of instead of the line they wanted. The mechanics matter, but the vision is what makes the mechanics possible, which is why we put the look-where-you-want-to-go drill so early in the progression.
If you're a coach, one thing you can do with a stuck rider is to stop fixing their hips and feet, and start checking their eyes. Watch where they're looking through a corner and you'll usually see the cause of the problem before you see the symptom. We spend a lot of time on this in our Intermediate Coach Course, because it's the diagnostic shift that changes how you teach cornering for the rest of your career.
Frequently Asked Questions
Should I brake before or during a corner?
Brake before. Any braking inside the corner uses up the grip you needed to hold the line, which is why you end up running wide on the exit. Finish your braking on the approach, release the brakes at the entry, and commit through the apex.
Why am I always understeering on flat corners?
Usually one of three reasons: you're looking at the front wheel instead of the corner exit, you're not weighting the outside foot hard enough, or you're leaning your body before the bike (which puts your centre of mass outside the contact patch and washes the front). Fix the eyes first, then the outside foot.
How do I lean my bike without crashing?
Lean the bike, not the body, on flat corners. Drop the outside foot to six o'clock and push down through it as the bike tips inward, and let your inside knee open out toward the apex. The bike leans further than your torso does, which keeps your weight stacked over the contact patch even as the bike angles into the turn.
What's the difference between cornering on a flat corner and a berm?
On a flat corner, the bike leans more than the body, because grip comes from the tire's side knobs biting into the dirt. On a berm, the bike and body lean together as one stacked unit, because the wall of the berm is doing the work and you're loading it through the suspension and legs. Different corners want different shapes.
Should I put my inside foot down or my outside foot down?
Outside foot down, every flat corner. Dropping the inside foot feels stable, like a kickstand, but it lifts the outside tire knobs off the ground and removes the bite you needed. On berms it matters less, because both feet stay roughly level as you load the bank, but the default in every corner you're learning should be outside foot down and weighted hard.
How do I pump a berm for speed?
Treat the berm like a quarter pipe. As you enter, let the bank push your weight down into the bike, then extend your legs and arms against the down-slope of the berm on the exit. The compression and extension is what generates speed out of the corner, which is why a well-pumped berm can exit faster than its entry without a single pedal stroke.
Take It Further
Cornering coursework is one of the cores of our skills curriculum, and the drill progression in this guide is the same shape we run in our Intermediate Coach Course and FLOW programs.
If you want to go deeper, a GSMBC Membership gives you access to our Reference Guide, webinars, and coaching frameworks built for modern MTB instruction.
Join for free at: https://gsmbc.pro/member-benefi
