Topo Athletic
ST-6 Running Shoe – Women's
$120.00
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The Grivet Take
The ST-6 is Topo's minimalist zero-drop daily trainer, built for runners who want ground feel, natural foot movement, and an anatomical wide toe box on a low-profile platform. The 14 mm ZipFoam EVA midsole reads firm and connected to the ground; the flexible build and zero-drop geometry encourage a natural midfoot or forefoot strike. Two trade-offs to flag: this is not a max-cushion shoe and is not built for runners coming from a traditional 8-10 mm drop daily; transition with care to avoid calf and Achilles strain. And the heel counter is small and flexible, which suits the minimalist intent but offers less security than a traditional trainer. Runners wanting an anatomical fit with more cushion should look at the Topo Fli-Lyte 6 or Phantom 4 instead; runners wanting a similar minimalist character should consider the Altra Escalante 3.
Fit & Feel snapshot
Fit
LengthHow the shoe fits compared with true-to-size expectations.
True to size
Toe box widthHow much side-to-side room the shoe has across the front of the foot.5 of 5
NarrowWide
Toe box volumeHow much vertical room the shoe has above the toes.4 of 5
LowHigh
MidfootHow snug or roomy the shoe feels through the arch and laces.3 of 5
SnugRoomy
Heel holdHow securely the back of the shoe holds the heel.2 of 5
LooseLocked
Ride
CushionHow much material sits underfoot. This is about amount of cushioning, not how soft it feels.2 of 5
MinimalMaximal
SoftnessHow soft or firm the cushioning feels underfoot.3 of 5
FirmPlush
RockerHow much the shoe's shape rolls you forward through the step.1 of 5
FlatAggressive
ResponsivenessHow much pop or energy return the shoe feels like it gives back.3 of 5
DeadBouncy
Support
Support TypeSupport Type describes how much built-in guidance the shoe has. Neutral shoes do not add support structure. Stability shoes use geometry, rails, firmer foam, or frame designs to create a more guided feel. Motion control shoes are the maximum-support category and are rare in modern running.
Neutral
Stability
Motion Control
No added support structure
PlatformPlatform describes the width and shape of the shoe's base underfoot. A wider platform can feel steadier even when the shoe is neutral. This is separate from Support Type.
Standard platform
How it fits
Length runs true to size for most runners. The toe box is anatomically wide with full toe splay, Topo's signature geometry. Midfoot is moderate in volume; there is no heel counter or major structural element, just a thin internal padding that suits the minimalist intent. Some runners report a slight midfoot arch bump that may be more noticeable for flat-footed runners. Women's sizing is offered in B (standard) only; runners needing wider should look at the Topo Phantom 4 or a different model. Socks are strongly recommended; the mesh material is thin and can rub bare skin.
How it feels
The ZipFoam EVA midsole reads firm and connected to the ground rather than plush, with 14 mm of stack that gives the foot direct feedback on every landing. The shoe is moderately flexible with no rocker geometry; the foot flexes through toe-off naturally rather than rolling on built-in mechanics. The zero-drop platform encourages a natural midfoot or forefoot strike; heel-strikers transitioning from higher-drop dailies should expect Achilles and calf adaptation. The rubber outsole grips dry road reliably but rocks transmit through the thin stack on uneven surfaces. Best at easy paces; not built for speed work or long distances.
Quick specs
- Category
- Daily trainer
- Surface
- Pavement · Treadmill
- Heel stackHow much shoe sits between your foot and the ground.
- 14.0 mm
- Forefoot stack
- 14.0 mm
- DropThe difference between heel height and forefoot height, measured in millimeters.
- 0.0 mm
- Weight (women's 7)
- 5.2 oz · 147 g
- CushionHow much material sits underfoot. This is about amount of cushioning, not how soft it feels.
- 2 / 5
- Support TypeSupport Type describes how much built-in guidance the shoe has. Neutral shoes do not add support structure. Stability shoes use geometry, rails, firmer foam, or frame designs to create a more guided feel. Motion control shoes are the maximum-support category and are rare in modern running.
- Neutral
- PlatformPlatform describes the width and shape of the shoe's base underfoot. A wider platform can feel steadier even when the shoe is neutral. This is separate from Support Type.
- Standard platform
- Midsole
- ZipFoam (EVA, low-profile)
- Outsole
- Rubber
- PlateA stiff layer, usually carbon, nylon, or TPU, built into some shoes to add structure, snap, or propulsion.
- No
- WidthsThe width options this shoe is made in. Actual availability depends on current inventory.
- B
Tech, translated
ZipFoam EVA in the ST-6 is Topo's low-profile midsole compound, a foam-only construction tuned for ground feel rather than max cushion. The 14 mm zero-drop platform is intentionally minimal; the foam compresses with a firmer feel than the road-trainer models in the line.
There is no plate, rocker, or stability mechanism. The shoe relies on a natural midfoot/forefoot strike pattern and the runner's own biomechanics rather than built-in geometry.
The anatomical wide toe box is Topo's signature geometry: wide enough for full toe splay without going to zero drop... wait, the ST-6 IS zero drop. It's the closest Topo gets to the Altra zero-drop minimalist category, with the toe room of an Altra and the flexible thin build of a barefoot-style trainer.
What changed from the previous version
The ST-6 keeps the v5's minimal-build formula essentially unchanged: same 14 mm zero-drop platform, ZipFoam EVA midsole, anatomical wide toe box, and flexible upper. The shoe remains tuned for ground feel, natural movement, and easy daily mileage rather than max-cushion comfort. v5 fans coming back will recognize the line.
Frequently asked
What changed from the Topo ST-5 to the ST-6?
The ST-6 doesn't really change the formula. The minimalist zero-drop platform, 14 mm ZipFoam EVA midsole, and anatomical wide toe box all carry over from the v5. The upper gets minor refinements, but stack and drop remain unchanged. v5 fans coming back will recognize the shoe immediately.
Is the Topo ST-6 firm or soft underfoot?
The ST-6 lands firm and on the connected side rather than soft. The 14 mm ZipFoam EVA midsole has minimal cushion by today's standards and is tuned for ground feel rather than plush feel. This is intentional per the minimalist line direction. Runners looking for a softer daily with more cushion should consider the Topo Fli-Lyte 6 or Phantom 4 instead.
Is the Topo ST-6 good for treadmill running?
Yes, with caveats. The flexible build and anatomical toe box suit treadmill paces, but the minimal 14 mm zero-drop platform asks the runner's biomechanics to do more work than a traditional cushioned trainer. Runners using the treadmill for short easy efforts will be well-served; runners chasing longer treadmill sessions or speed work should consider a more cushioned shoe.
Compare it toSimilar shoes or common alternatives, with the key fit and ride differences called out.
Altra Escalante 3
Choose the ST-6 for a slightly firmer ZipFoam ride at a similar zero-drop foot-shaped fit. Choose the Escalante 3 for Altra's softer Ego Max midsole with a similar anatomical platform.
Compare Altra Escalante 3 →
Saucony Kinvara 16
Choose the ST-6 for a minimalist zero-drop foot-shaped daily with ground feel. Choose the Kinvara 16 for a Saucony's longstanding lightweight daily with a 4 mm drop.
Compare Saucony Kinvara 16 →
New Balance FuelCell Rebel v5
Choose the ST-6 for a minimalist platform and ground feel. Choose the Rebel v5 for a bouncier PEBA-blended FuelCell midsole, more cushion, and a 6 mm drop.
Compare New Balance FuelCell Rebel v5 →
Adidas Adizero Evo SL
Choose the ST-6 for a zero-drop anatomical fit with ground feel. Choose the Evo SL for Lightstrike Pro foam with a higher stack and a 6 mm drop for unplated tempo work.
Compare Adidas Adizero Evo SL →
Buyer's guide
Read our running shoes guide
A clear framework for picking running shoes by surface, cushion, drop, stability, and fit.
Read the guide