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Shoes · Our picks

Best Altra Running Shoes: Torin 9, Torin ST or Experience Flow 3?

Altra sells two things nobody else does at scale: a toe box shaped like a foot, and a zero-drop platform. Both are genuinely useful and both can injure you if you switch carelessly. Three shoes, and the honest transition plan.

Written for:
By Mike M.Updated How we pick
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The short answer

Quick picks

#ProductBest forScorePrice
1
Altra Torin 9
Altra Torin 9

The zero-drop neutral daily trainer: a roomy FootShape toe box, a 28 mm stack, new P35X dual-density foam and Regular or Wide. The default Altra, and the wide-toe-box daily shoe for runners who do not need support.

Best Altra overall7.5 /10$145.00Amazon
2
Altra Experience Flow 3
Altra Experience Flow 3

A 4 mm drop rather than zero, 32 / 28 mm of EGO P35 foam, a rocker shape and 9 oz. The roomy toe box without the full zero-drop commitment, which makes it the sane way in.

Best first Altra7.2 /10$144.00Amazon
3
Altra Torin ST
Altra Torin ST

The Torin plus a GuideRail for gentle medial guidance, in Regular and Wide at 10.4 oz. For wide feet that also overpronate, which is a combination most brands handle badly.

Best Altra with support7.5 /10$159.95Amazon

#ad · Prices come live from Amazon, last checked October 17, 2026. Scores are ours, compiled from published specs and the maker's intended use. Product photos come from Amazon. Tap a row for the full write-up.

The best Altra running shoe for most runners is the Altra Torin 9: the brand's zero-drop neutral daily trainer, with a FootShape toe box, a 28 mm stack, new P35X dual-density foam and Regular or Wide widths. If you have never run in a zero-drop shoe, buy the Experience Flow 3 instead — it keeps the roomy toe box at a 4 mm drop, which is a far kinder introduction. If your feet are wide and you overpronate, the Torin ST adds a GuideRail.

The short answer

The two Altra ideas, explained

  • FootShape fit. A toe box wide at the front rather than tapered to a point. The Experience Flow 3 uses what Altra calls Standard FootShape: room for your toes with a secure midfoot. This is the reason most Altra buyers become Altra buyers.
  • Zero drop. The heel and forefoot sit at the same height. The Torin 9 and Torin ST are both 0 mm; the Experience Flow 3 is 4 mm. Coming from a 10 mm trainer, zero drop means your calf and Achilles take load the shoe used to take.

Note what zero drop is not: it is not minimalist or barefoot. The Torin 9 carries a 28 mm stack, which is a normal amount of foam. We cover that distinction in are minimalist running shoes worth it, and the general mechanics in heel drop and stack height explained.

The three, side by side

SpecAltra Torin 9Altra Experience Flow 3Altra Torin ST
Weight9.8 oz / 269 g (men's)9 oz / 255 g (men's)10.4 oz / 294 g (men's)
Heel-to-toe drop0 mm (zero drop)4 mm0 mm (zero drop)
Midsole foamP35X dual-density (firmer outside, softer inside)Altra EGO P35Altra EGO MAX
Support typeNeutralNeutralGuideRail: gentle medial guidance designed for overpronators
Every value links to Altra's own product page or to the named lab's measurement.

The Experience Flow 3 is the lightest at 9 oz and has the most foam under the forefoot at 28 mm, with a rocker shape that RunRepeat covers in its lab review. The Torin ST is the heaviest at 10.4 oz, which is what the GuideRail costs you. All three come in Regular and Wide — and because the standard width is already generous, an Altra Regular often fits a foot that needs a 2E elsewhere.

How to switch to zero drop without hurting yourself

This is the section most Altra pages skip. If you are moving from a 10 to 12 mm trainer:

  1. Start with the Experience Flow 3, not the Torin. 4 mm is a step, 0 mm is a leap.
  2. Run every other day in it for two weeks, keeping your old shoes for the runs in between.
  3. Keep the first three runs short and easy. No hills, no intervals. Calf soreness in the first fortnight is normal; Achilles pain is a stop signal.
  4. Do not race in it until you have four weeks of easy running behind you.

If you already run in a low-drop shoe — a New Balance at 4 to 6 mm, a Saucony Kinvara at 4 mm — you can go straight to the Torin 9 and skip most of this.

Which Altra for your weekly mileage

  • Couch to 5K. The NHS plan runs three short sessions a week for nine weeks, which is actually a good transition schedule by accident. The Experience Flow 3.
  • 10K training. Experience Flow 3 or Torin 9, depending on how your calves took the switch.
  • Half marathon. Higdon's Novice 1 Half peaks at 10 miles. The Torin 9, with the understanding that a 28 mm stack is less protection than a 40 mm trainer offers on tired legs.
  • Marathon. Novice 1 Marathon runs to a 20-mile peak. The Torin 9 handles easy miles; for the longest runs most Altra runners also keep a taller shoe. Altra fields no carbon racer we rate, so see best carbon-plated running shoes for race day.

In detail

The picks, in full

1
Altra Torin 9

Best Altra overall

Altra Torin 9

7.5 /10

The zero-drop neutral daily trainer: a roomy FootShape toe box, a 28 mm stack, new P35X dual-density foam and Regular or Wide. The default Altra, and the wide-toe-box daily shoe for runners who do not need support.

Published specs

Weight:9.8 oz / 269 g (men's)Stack height:28 mmHeel-to-toe drop:0 mm (zero drop)Midsole foam:P35X dual-density (firmer outside, softer inside)Support type:NeutralWidths:Regular, Wide
Level fit (30%)
7.8
Mileage protection (25%)
7.6
Stability & fit range (15%)
7.8
Pace responsiveness (15%)
6.6
Rotation versatility (15%)
7.6

What it gets right

  • Standard FootShape fit: room for your toes with a secure midfoot, per Altra
  • A Wide width on top of the roomy toe box, in men's and women's
  • Vibram XS DURA outsole that Altra says is 8.5% grippier than the Torin 8's
  • Carries the APMA Seal of Acceptance, per Altra

What it doesn't

  • Zero drop is a big change if you are used to the 6-12 mm drops of most shoes in this group
  • Neutral: no stability features (the Torin ST adds GuideRail support)
  • A 28 mm stack is modest next to the 40 mm-plus support shoes here

Skip this if…

…you want a traditional heel-to-toe drop or built-in stability; the Torin 9 is zero drop and neutral

$145.00$160.00−9%View on Amazon

#ad · Price as of October 17, 2026 · Affiliate disclosure for the link to Altra Torin 9

2
Altra Experience Flow 3

Best first Altra

Altra Experience Flow 3

7.2 /10

A 4 mm drop rather than zero, 32 / 28 mm of EGO P35 foam, a rocker shape and 9 oz. The roomy toe box without the full zero-drop commitment, which makes it the sane way in.

Published specs

Weight:9 oz / 255 g (men's)Stack height (heel / forefoot):32 mm / 28 mmHeel-to-toe drop:4 mmMidsole foam:Altra EGO P35Support type:NeutralFit:Standard FootShape: room for your toes with a secure midfoot
Level fit (30%)
7.8
Mileage protection (25%)
6.9
Stability & fit range (15%)
6.4
Pace responsiveness (15%)
7.2
Rotation versatility (15%)
7.6

What it gets right

  • A 4 mm drop is a middle ground between zero-drop Altras and conventional 8-10 mm shoes
  • Altra's rocker shape is designed for an efficient toe-off
  • 9 oz (men's) is lighter than the Torin 9 and Torin ST
  • Roomy FootShape toe box with a secure midfoot

What it doesn't

  • Altra's US product page shows no separate Wide width, unlike the Torin 9 and Torin ST
  • Neutral, with no stability features
  • A 32 mm heel / 28 mm forefoot is modest cushion for marathon-length long runs

Skip this if…

…you need a Wide width or built-in support; the Torin 9 offers Wide and the Torin ST adds GuideRail guidance

$144.00View on Amazon

#ad · Price as of October 17, 2026 · Affiliate disclosure for the link to Altra Experience Flow 3

3
Altra Torin ST

Best Altra with support

Altra Torin ST

7.5 /10

The Torin plus a GuideRail for gentle medial guidance, in Regular and Wide at 10.4 oz. For wide feet that also overpronate, which is a combination most brands handle badly.

Published specs

Weight:10.4 oz / 294 g (men's)Stack height:28 mmHeel-to-toe drop:0 mm (zero drop)Midsole foam:Altra EGO MAXSupport type:GuideRail: gentle medial guidance designed for overpronatorsWidths:Regular, Wide
Level fit (30%)
8
Mileage protection (25%)
7.6
Stability & fit range (15%)
9.2
Pace responsiveness (15%)
5.6
Rotation versatility (15%)
6.8

What it gets right

  • Combines a roomy FootShape toe box, a Wide width and stability guidance in one shoe
  • Altra says GuideRail gives gentle guidance for overpronators only when it's needed
  • Regular and Wide widths in men's and women's
  • Carries the APMA Seal of Acceptance, per Altra

What it doesn't

  • Zero drop is a big change if you are used to the 6-12 mm drops of the other support shoes here
  • 10.4 oz (men's) is heavier than the neutral Torin 9's 9.8 oz
  • A 28 mm stack is modest next to the 40 mm-plus support shoes here

Skip this if…

…you want a conventional-drop support shoe; the Adrenaline GTS 25 (10 mm) or GT-2000 15 (8 mm) are the traditional route

$159.95View on Amazon

#ad · Price as of October 17, 2026 · Affiliate disclosure for the link to Altra Torin ST

How to choose

  1. If this is your first Altra, buy the Experience Flow 3. You get the toe box at a 4 mm drop and the lightest shoe in the range.
  2. If you already run low-drop, buy the Torin 9. It is the better daily trainer of the two, with the new P35X dual-density midsole.
  3. Add the GuideRail only if you overpronate. The Torin ST is 10.4 oz; that weight is only worth paying for if you need the guidance.
  4. Try the Regular width first. The AAOS asks for room to wiggle your toes and a snug heel — an Altra Regular usually gives both to a foot that needs a 2E elsewhere.
  5. Budget two weeks of easier running. Treat the switch as training, not shopping.

Common mistakes

  • Going from a 12 mm trainer to the Torin 9 overnight. This is how runners end up with Achilles pain and blame the brand.
  • Confusing zero drop with minimalist. The Torin 9 has 28 mm of foam. It is a cushioned shoe with a flat geometry.
  • Buying an Altra to fix a sizing problem. If your shoes are too short, buy longer shoes. The toe box helps with width, not length.
  • Expecting a 40 mm-stack ride. Altra's road shoes sit at 28 to 32 mm. For marathon long runs on tired legs, that is less protection than a max-cushion shoe — see best max cushion running shoes.
  • Ignoring calf tightness. Soreness settles; sharp Achilles pain means stop and get it looked at.

How we chose these

Researched, compared, scored for your level

We start from what a published training plan actually asks of a runner at your level, compare every model's published specs (stack height, drop, weight, plate, stability features, widths) against that job, and score each pick on a public rubric. Each spec links to where it came from, so you can shortlist in minutes and buy with the numbers in front of you.

Scores are our editorial judgments from that documented research, and rankings are earned on the rubric alone — placement is never for sale. The rubric and weights are on the How We Pick page.

Questions

Frequently asked

What is the best Altra running shoe?
The Torin 9 for most Altra runners: zero drop, a FootShape toe box, a 28 mm stack, P35X dual-density foam and Regular or Wide widths. If you have never run in a zero-drop shoe, start with the Experience Flow 3 at a 4 mm drop instead.
Are zero-drop running shoes bad for you?
Not inherently, but the switch loads your calves and Achilles differently, so it needs a transition: short easy runs, every other day, for two weeks. Soreness in the first fortnight is normal; sharp Achilles pain is a stop signal. This is not medical advice.
Is an Altra a minimalist shoe?
No. Zero drop describes the geometry, not the amount of foam. The Torin 9 carries a 28 mm stack and the Experience Flow 3 a 32 / 28 mm stack, which is normal cushioning. See are minimalist running shoes worth it.
Are Altras good for wide feet?
Yes, and this is the brand's strongest claim. The FootShape toe box is wide at the front by design, all three shoes come in Regular and Wide, and the Regular often fits a foot that needs a 2E in another brand. See best running shoes with a wide toe box.
Torin 9 vs Torin ST: what is the difference?
The ST adds a GuideRail for gentle medial guidance, which Altra designs for overpronators, and weighs 10.4 oz against the Torin 9's 9.8 oz. Everything else — zero drop, 28 mm stack, Regular and Wide — is shared.

Keep going

Related reading

Receipts

Sources

Every figure above is traceable. Specs come from the maker's own pages or the named reviewer's published measurements (linked above); level definitions come from published training plans; prices come from Amazon's own API and carry the date they were checked, so you buy on a current number. Read the full method.