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Salomon S/Lab Ultra 4

In production · trail · Trail / Long run / Tempo · $200

Precision-fit ultra racer built around Kilian's mountain requirements.

Built for trail, long run, tempo, at a target pace of 8:00–11:30 /mi on trail.

The spec sheet

Weight
265 g / 9.3 oz
Heel stack
36 mm
Drop
8 mm
Plate
Rock
Cushioning
4 / 5
Energy return
4 / 5
Responsiveness
3 / 5
Rocker
3 / 5
Flexibility
2 / 5
Stability
3 / 5 (5 = most guidance)
Toe-box
Standard
Sizing
True to size
Durability
~450 mi
Price
$200

How it rides

The foam

Salomon tuned this midsole soft (4/5 on our cushioning scale). Energy return is above average: the midsole rebounds well without feeling unstable. 36 mm of heel stack is the modern daily-trainer sweet spot — enough foam for long miles without losing contact with the road. Combined, the ride reads as lively at 3/5 responsiveness.

The plate

A rock plate sits between the foam and the outsole to spread the load of sharp stones and roots. It is protection, not propulsion — it does not add pop, but it keeps the underfoot bruising out of long days on technical ground.

The geometry

A 8 mm drop is the mainstream middle — familiar to almost anyone coming from a standard trainer. The rocker is moderate — enough curve to smooth the roll-through without dictating your footstrike. The forefoot is stiff, so it rolls rather than bends — a lever, not a slipper. Support is light — neutral, with a mildly steady platform.

Fit, sizing & life

The toe-box is standard width — comfortable for most feet without swimming. It fits true to size. Expect roughly 450 miles from the outsole, about $0.44 per mile at $200.

For the foams and plates Salomon uses across its line, read the Salomon brand guide.

How it compares

Measured against the 542 currently-available shoes in the catalog. The bar shows where this shoe sits in that range.

Weight

265 g / 9.3 oz

10 g lighter than the catalog median of 275 g

Heel stack

36 mm

Level with the catalog median of 36 mm

Drop

8 mm

2 mm higher than the catalog median of 6 mm

Price

$200

40 pricier than the catalog median of 160

Responsiveness

3 / 5

Catalog median 3 / 5

Cushioning

4 / 5

Catalog median 4 / 5

Energy return

4 / 5

Catalog median 3 / 5

Durability

~450 mi

Catalog median ~400 mi

Within the Salomon line it is lighter than the brand's median (278 g / 9.8 oz) and sits taller than its median stack (34.5 mm).

Closest alternatives

Current shoes with the nearest combination of weight, stack, drop, foam feel and plate.

Mount to Coast T1(2025)

255 g / 9.0 oz · 36 mm · 5 mm drop · Rock · $190

Mount to Coast's trail entry: wide fit, drainage-friendly upper, ultra focus.

Saucony Endorphin Rift

258 g / 9.1 oz · 34 mm · 6 mm drop · Rock · $180

Cushioned, rockered trail ultra shoe built for long days.

Merrell Agility Peak 6

287 g / 10.1 oz · 38 mm · 8 mm drop · Rock · $160

Cushioned technical trail workhorse on Vibram Megagrip with a rock plate.

Under Armour Infinite Pro

300 g / 10.6 oz · 36 mm · 8 mm drop · Rock · $135

Cushioned trail version of the Infinite platform for mixed terrain.

New Balance Fresh Foam X Garoe v2

298 g / 10.5 oz · 38 mm · 8 mm drop · Rock · $120

New Balance Fresh Foam X Garoe v2: 38 mm heel stack, 8 mm drop, 269 g — specs from independent lab testing.

Lineage & siblings