What Is a Heel-to-Toe Drop in Running Shoes?
If you’ve ever looked closely at the specifications of a running shoe, you’ve probably seen numbers like 5mm, 6mm, 8mm or 10mm drop.
But what does that actually mean?
Heel-to-toe drop is simply the difference in height between the heel and the forefoot of a running shoe.
For example, if a shoe has 38 mm of cushioning under the heel and 30 mm under the forefoot, it has an 8 mm heel-to-toe drop.
It sounds like a small detail, but the drop can influence how a shoe feels underneath your foot and how you move through your stride.
The important thing to remember is that a higher or lower drop isn’t automatically better. It comes down to your running style, comfort and what feels natural for you.
What Does Heel-to-Toe Drop Actually Change?
Heel-to-toe drop changes the angle your foot sits at inside the shoe.
A higher-drop shoe places the heel slightly higher above the forefoot.
A lower-drop shoe creates a flatter platform between the heel and toes.
That difference can influence where you feel the shoe working and where your feet connect with the ground.
Higher-drop shoes can place slightly less demand on the calf and Achilles area, while lower-drop shoes may require more work through the lower leg and ankle.
That doesn’t mean one style is safer or more efficient - it simply means your body may experience each shoe differently.
The overall feel of the shoe also depends on plenty of other factors, including:
-
Cushioning
-
Midsole softness
-
Rocker shape
-
Shoe stiffness
-
Stability
-
Stack height
-
Your individual running mechanics
This is why two shoes with the same heel drop can still feel completely different.
What Is Considered a High or Low Drop?
There aren’t strict categories, but running shoes can generally be thought of like this:
Low drop: Around 0–5 mm
Moderate drop: Around 6–8 mm
Higher drop: Around 9–12 mm
Most traditional running shoes have historically sat somewhere in the moderate-to-higher range, although modern designs now cover a much wider spread.
For example, the HOKA Bondi 9 uses a 5 mm drop, despite being one of the most highly cushioned shoes in the INTERSPORT range.
The New Balance 1080v15 sits at 6 mm, providing a slightly flatter feel while still offering plenty of cushioning.
At the other end of the scale, the Nike Vomero 18 uses a 10 mm drop, creating a more traditional heel-to-toe difference.
Meanwhile, the ASICS Superblast 3 sits in the middle at 8 mm.
That shows why cushioning and drop shouldn’t be treated as the same thing.
A shoe can be highly cushioned and still have a relatively low drop.
What Does a Higher Drop Feel Like?
Higher-drop running shoes usually create a more noticeable difference between the heel and forefoot.
Some runners find this comfortable because the heel feels slightly elevated.
This can particularly appeal to:
-
Heel strikers
-
Runners who prefer a traditional running-shoe feel
-
People who feel more comfortable with less stretch through the calf and Achilles
-
Runners transitioning from walking or everyday footwear
The Nike Vomero 18 is a good example of these theories in action.
It uses a 10 mm heel-to-toe drop combined with maximum cushioning, giving it a more traditional heel-elevated feel, with very little ground contact.
However, a higher drop does not automatically mean the shoe is more cushioned or more supportive.
It only describes the difference in height between the heel and forefoot.
What Does a Lower Drop Feel Like?
A lower-drop shoe keeps the heel and forefoot closer to the same height.
This can create a flatter and sometimes more natural-feeling platform.
Some runners like lower-drop shoes because they feel more connected to the ground or prefer the way the shoe transitions underneath them.
The HOKA Bondi 9 is an interesting example.
Despite having a large amount of cushioning, it has only a 5mm heel-to-toe drop.
HOKA combines this with its rocker-shaped geometry, helping the shoe move smoothly from landing through to toe-off.
Lower-drop shoes can place more demand on the calf and Achilles compared with higher-drop models, particularly if you’re not used to them.
For that reason, changing dramatically from a high-drop shoe to a much lower-drop model is something worth doing gradually.
Is a Lower Drop Better for Forefoot Runners?
Not necessarily.
It’s easy to assume:
Heel striker = high drop
and
Forefoot striker = low drop
But running isn’t quite that simple.
Your foot strike can be influenced by your speed, running style, fatigue and the shoe itself.
A forefoot runner can still be comfortable in an 8mm or 10mm shoe.
Likewise, a heel striker can run perfectly comfortably in a lower-drop model.
Heel drop should be treated as one part of the shoe rather than a strict rule based on where your foot lands.
Does Heel Drop Affect Your Knees?
Heel-to-toe drop can change how forces are distributed through the body.
Higher and lower drops can slightly change the demands placed on areas such as the knees, calves, ankles and Achilles. However, that doesn’t mean choosing a certain heel drop will automatically prevent pain or injuries.
Running injuries are influenced by many factors, including:
-
Training load
-
Previous injuries
-
Strength
-
Recovery
-
Running volume
-
Footwear
-
How quickly your training changes
If a certain shoe feels more comfortable for you, that’s often what you should go by – you shouldn’t choose a shoe purely because someone says a particular drop is “better for your knees”.
Can Changing Heel Drop Cause Problems?
It can if the change is too sudden.
Imagine you’ve spent years running in shoes with a 10–12 mm drop and then immediately switch to a 0–4 mm shoe.
Your calves and Achilles may suddenly be working through a different range than they’re used to.
That doesn’t mean lower-drop shoes are bad – your body may simply need time to adjust.
If you’re making a noticeable change in heel-to-toe drop, introduce the new shoes gradually rather than immediately using them for all of your weekly kilometres.
The same idea applies whenever you make a significant change in footwear.
Does More Cushioning Mean a Higher Drop?
No.
This is one of the biggest misconceptions around heel-to-toe drop.
Stack height tells you how much material sits underneath your foot.
Heel-to-toe drop tells you the difference between the amount underneath the heel and forefoot.
For example, a shoe could have:
40mm heel / 35mm forefoot = 5mm drop
Another shoe could have:
32mm heel / 22mm forefoot = 10mm drop
The first shoe has considerably more cushioning underneath the foot, despite having a lower heel-to-toe drop. This is why it’s worth looking at more than one number when comparing running shoes.
Which Heel-to-Toe Drop Should You Choose?
There isn’t a perfect number.
For most runners, comfort should come first.
If you’ve always been comfortable in an 8–10 mm running shoe, there’s no reason you suddenly need to move to a lower drop.
Likewise, if you prefer the flatter feel of a 5–6 mm shoe, there’s no reason you need something higher.
A few examples from the current INTERSPORT range show how much choice there is:
5mm – HOKA Bondi 9
A highly cushioned shoe with a relatively low drop.
6mm – New Balance 1080v15
A soft everyday running shoe with a moderate-to-low drop.
8mm – ASICS Superblast 3
A highly cushioned, responsive trainer sitting around the middle of the range.
10mm – Nike Vomero 18
A maximum-cushion daily trainer with a more traditional heel-to-toe difference.
None of these numbers make one shoe better than another.
They simply help explain why each shoe may feel different.
What Should You Focus on When Trying Shoes?
Rather than walking into a store and asking for a specific heel drop, start with how the shoe actually feels.
Ask yourself:
-
Does the shoe feel comfortable?
-
Does my stride feel natural?
-
Does my heel feel secure?
-
Do I like the amount of cushioning?
-
Does the shoe feel stable?
-
Does the transition from heel to toe feel smooth?
-
Does it feel similar to footwear I’ve been comfortable in before?
Once you know what feels good, heel-to-toe drop can become a useful way of comparing similar shoes.
You may even notice that your favourite running shoes tend to sit around a similar drop.
So, Does Heel-to-Toe Drop Really Matter?
Yes, but it shouldn’t be the only reason you choose a running shoe.
Heel drop changes the relationship between your heel and forefoot and can influence how the shoe feels through your stride.
But cushioning, fit, stability, foam, rocker geometry and your own preferences are just as important.
You don’t need to chase the lowest or highest number.
Instead, use heel-to-toe drop as another tool for understanding why different running shoes feel the way they do.
Explore INTERSPORT Australia’s running shoe range and compare different cushioning levels, heel drops and running styles to find the shoe that feels right for you.
