Heel-to-Toe Drop Explained
Heel-to-toe drop is the height difference, in millimeters, between the heel and the forefoot of a shoe. A shoe with a 10 mm drop has a heel 10 mm higher than the front; a 0 mm drop shoe is flat. Most modern running shoes fall between 4 and 10 mm.
Drop changes how a shoe feels and which part of your leg works a bit harder, but it is only one spec among several. Stack height, cushioning, rocker shape and fit often matter just as much. Research on whether drop affects injury risk is mixed, so we avoid treating any number as right or wrong.
This guide explains what drop is, how it is measured, how common drops feel, and how to switch if you want to. It is general information drawn from brand specs and published reviews, not medical advice, and we have not tested these shoes ourselves. If you have persistent pain, a podiatrist or physical therapist is the right person to ask.
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What is heel-to-toe drop?
Take the thickness of the midsole under your heel, subtract the thickness under the ball of your foot, and you have drop. It is sometimes called "offset" or "heel drop".
For example, the Brooks Ghost 18 lists a 36 mm heel stack and a 26 mm forefoot stack, giving a 10 mm drop. The HOKA Bondi 9 lists 43 mm and 38 mm, which is 5 mm.
Drop is a difference, not a thickness. A shoe can have a high stack and a low drop, as the Bondi 9 does, or a low stack and a higher drop.
Drop vs stack height
People often mix these up.
- Stack height is how much foam is under you. More stack usually means more cushioning and weight.
- Drop is the angle of the platform from heel to toe.
Two shoes can share the same drop but feel very different. The Nike Pegasus 42 and Nike Vomero 18 both list a 10 mm drop, yet the Vomero has a 45 mm heel stack against the Pegasus's 37 mm. The Vomero feels plusher and weighs more.
How different drops are said to feel
These are general descriptions of how runners commonly talk about them, not guarantees.
0 to 4 mm: flat or "zero drop"
Brands and runners describe a more natural, level platform. Shoes like this are less common among the big daily trainers in our data. Training shoes such as the NOBULL Outwork (4 mm) sit here for gym use. Runners who try low drops often report that calves and Achilles feel more engaged, which is why a gradual switch is commonly advised.
5 to 6 mm: low drop
Examples: HOKA Bondi 9 and Mach 7 (5 mm), On Cloudmonster 3 (6 mm), Adidas Adizero Boston 13 (6 mm) and New Balance 1080v15 (6 mm). These feel close to level with a modest heel lift. HOKA often pairs low drop with a high stack and a rocker shape, which helps the shoe roll forward.
7 to 9 mm: mid drop
This is the largest group. HOKA Clifton 11 (8 mm), ASICS Novablast 6 (8 mm), Brooks Glycerin 23 (8 mm) and On Cloudsurfer 2 (9 mm) sit here. Many people find this range a comfortable default.
10 mm and above: higher drop
Brooks Ghost 18, Adrenaline GTS 25 and Nike Pegasus 42, Vomero 18 and Structure 26 are all 10 mm. A higher drop places the heel higher relative to the forefoot. Some runners find this friendlier on calves and the Achilles tendon, while others do not notice. Walking shoes can go higher: the Brooks Addiction Walker 2 lists 12 mm. Lifting shoes go much higher; the Nike Romaleos 4 lists a 19 mm drop.
Does drop prevent injuries?
The evidence is not settled. Studies and runner reports point in different directions, and drop affects different people differently. Because of that, there is no verified claim we can make that a particular drop prevents or causes a problem.
What is widely noted is that sudden changes in your gear can feel different and your body may need time to adapt. If a drop change is followed by soreness that does not ease, stop and get individual advice.
Which drop should you choose?
A practical approach:
- Stay close to what you wear now. If your current shoe is comfortable, pick a new one within a couple of millimeters of its drop.
- Match your preference. If you like a rocker and a rolling feel, a 5 mm HOKA may suit you. If you like a classic heel lift, try 8 to 10 mm.
- Do not choose on drop alone. Fit, width and cushioning decide comfort more often.
- Check the stack. A 5 mm drop on a thick stack feels different from a 5 mm drop on a thin stack.
You can compare these side by side below.
| Brooks Ghost 18 | HOKA Clifton 11 | HOKA Mach 7 | |
|---|---|---|---|
| Price | $150 | $155 | $145 |
| For | Men & women | Men & women | Men & women |
| Sizes | Men's and women's US sizes (full range not captured) | Men's and women's US sizes (full range not captured) | Men's and women's US sizes (full range not captured) |
| Fabric | — | — | — |
| Weight | 289 g (10.2 oz) | 258 g (9.1 oz) | 241 g (8.5 oz) |
| Heel-to-toe drop | 10 mm | 8 mm | 5 mm |
| Heel stack | 36 mm | 42 mm | 37 mm |
| Forefoot stack | 26 mm | 34 mm | 32 mm |
| Cushioning | Balanced | Soft | Balanced |
| Support | Neutral | Neutral | Neutral |
| Widths | Narrow, Regular, Wide, X-Wide | Regular, Wide, X-Wide | Regular, Wide |
| Plate | None | None | None |
| Best use | Daily | Daily | Daily |
| Comfort (our rating) | 4/5 | 4/5 | 4/5 |
| Performance (our rating) | 3/5 | 3/5 | 4/5 |
| Durability (our rating) | 4/5 | 4/5 | 3/5 |
| Value (our rating) | 4/5 | 4/5 | 4/5 |
| Returns | 90 days | 30 days | 30 days |
| Check price | Check price | Check price |
Switching drops gradually
If you do change to a lower or higher drop:
- Start with short, easy runs in the new shoes.
- Alternate old and new pairs for a few weeks.
- Build mileage slowly rather than jumping to your full routine.
- Listen to your body, and see a professional if something hurts.
Having a generous return window helps. Brooks offers a 90-day trial and Nike 60 days. See our activewear return policies comparison.
Drop in other shoes
Drop is not limited to running. Walking shoes, training shoes and lifting shoes all have one. Lifters often prefer low drops or raised heels depending on the movement. Our training shoes hub covers those. For daily running, the best running shoes list shows drop for each pick, and our guide to choosing running shoes puts it alongside cushion, support and fit.
Common drop numbers at a glance
| Drop | Examples from our data |
|---|---|
| 4 mm | NOBULL Outwork (training) |
| 5 mm | HOKA Bondi 9, HOKA Mach 7, HOKA Transport 2 |
| 6 mm | On Cloudmonster 3, Adidas Boston 13, New Balance 1080v15 |
| 8 mm | HOKA Clifton 11, Brooks Glycerin 23, ASICS Novablast 6 |
| 10 mm | Brooks Ghost 18, Nike Pegasus 42, Nike Vomero 18 |
Frequently asked questions
What is heel-to-toe drop in running shoes?
Heel-to-toe drop is the difference in midsole height between the heel and the forefoot, measured in millimeters. A 10 mm drop means the heel sits 10 mm higher than the front. Most daily trainers are between 4 and 10 mm, and a 0 mm drop shoe is flat.
What is a good drop for running shoes?
There is no single best drop. Many runners choose 8 to 10 mm for a classic feel, while others like 4 to 6 mm with a high-stack rocker shoe. Stay close to the drop of shoes you already find comfortable, and focus on fit and cushioning as well.
Is a lower drop better?
Not necessarily. Lower drop shoes feel flatter and may load the calves and Achilles more, while higher drops feel more traditional. Research on injury and drop is mixed, so choose by comfort and change gradually. For persistent pain, ask a podiatrist or physical therapist.
How do I switch to a different shoe drop?
Make the change gradually. Start with short, easy runs in the new pair, alternate with your old shoes for a few weeks, and build mileage slowly. Stop and seek professional advice if soreness lingers.
Does stack height matter more than drop?
They are separate and both matter. Stack height tells you how much foam is underfoot, while drop tells you the heel-to-forefoot difference. Two shoes with the same drop can feel very different if one has a much thicker midsole.
