ShoesadidasTerrex Freehiker 3 Ultra GTX

adidas

adidas Terrex Freehiker 3 Ultra GTX

adidas Terrex Freehiker 3 Ultra GTX. 39.4mm stack, 366g. Retailer specs verified on Running Warehouse.

PR Run Verified
Soft trailsLong ultrasDaily training

PR Run scores

Grip3/5
Cushion5/5
Protection4/5
Durability4/5
Versatility3/5

PR Run derived fit scores

94Elite

100-miler readiness

Will this shoe survive a hundred-mile night? 39.4 mm stack, cushion 5/5

92Elite

Descent tolerance

Does it save your toenails on long descents? 26.7 mm forefoot, heel counter 3/5

100Elite

Swelling room

Room to grow when your feet swell? 26.6 mm toebox height

79Great

Grit resistance

Does dust stay outside the shoe? 43 BR breathability

58Solid

Hot-day comfort

How well does it breathe in heat? 43 BR / 47% drying

39Passable

Achilles-friendly

Kind to a cranky achilles? 12.7 mm drop, heel counter 3/5

Full specs

Drop

12.7 mm

Heel stack

39.4 mm

Forefoot stack

26.7 mm

Weight

366 g

Lug depth

3.9 mm

Plate

No

Waterproof

No

Lab measurements

MeasurementValue
Traction (CoF)0.79
Breathability43 BR
Drying potential47 %
Flexibility17.8 N
Torsional rigidity20.80 Nm
Heel counter3/5
Energy return55.3 %
Shock absorption129 SA
Midsole softness41.5 HA
Softness in cold49.8 %
Outsole thickness2.0 mm
Tongue padding9.6 mm
Insole removableYes
Insole thickness5.0 mm
Reflective elementsYes

Lab numbers from RunRepeat. Sources.

Fit intelligence

Toebox width

Narrow toebox (72.4 mm vs 96 mm median)

Toebox height

Slightly tall (26.6 mm vs 25 mm median)

Fit intel pending.

Fit numbers from the lab. Swell guidance: foot care.

Questions before you race

Is the adidas Terrex Freehiker 3 Ultra GTX good for 100-mile races?

Elite. 39.4 mm stack, cushion 5/5. 100-miler readiness score 94/100.

Does the adidas Terrex Freehiker 3 Ultra GTX fit wide feet?

No. Toebox is 72.4 mm which is narrow. Look elsewhere if you need width.

What is the drop on the adidas Terrex Freehiker 3 Ultra GTX?

12.7 mm, with a 39.4 mm heel stack and 26.7 mm forefoot.

Is the adidas Terrex Freehiker 3 Ultra GTX good on wet rock?

Traction coefficient of friction on wet lab surface: 0.79. Elite grip on wet rock.

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Image: adidas product photo

Specs: retailer. Verified Sep 2, 2026.

Report inaccurate data: hi@pr.run. Data sources.

adidas Terrex Freehiker 3 Ultra GTX Review, Specs, and Fit (2026) | PR Run