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Altra Lone Peak RSM

In production · trail · Trail / Long run · $190

Reinforced, ruggedized Lone Peak built for harsh mountain weather.

Built for trail, long run, at a target pace of 9:30–13:30 /mi on trail.

The spec sheet

Weight
315 g / 11.1 oz
Heel stack
29 mm
Drop
0 mm
Plate
Rock
Cushioning
3 / 5
Energy return
3 / 5
Responsiveness
2 / 5
Rocker
1 / 5
Flexibility
3 / 5
Stability
3 / 5 (5 = most guidance)
Toe-box
Very wide
Sizing
True to size
Durability
~450 mi
Price
$190

How it rides

The foam

Altra tuned this midsole balanced (3/5 on our cushioning scale). Energy return is moderate — comfortable and predictable rather than bouncy. 29 mm of heel stack keeps you low and connected, with more ground feel than most current trainers. Combined, the ride reads as calm at 2/5 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 0 mm drop is close to level. That loads the calf and Achilles more than most runners are used to, so ease into it. The geometry is fairly traditional and flat, so the shoe follows your foot rather than steering it. Forefoot flex is middle of the road. Support is light — neutral, with a mildly steady platform.

Fit, sizing & life

The toe-box is unusually roomy — foot-shaped rather than tapered, which suits splayed or bunion-prone feet. It fits true to size. Expect roughly 450 miles from the outsole, about $0.42 per mile at $190.

For the foams and plates Altra uses across its line, read the Altra 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

315 g / 11.1 oz

40 g heavier than the catalog median of 275 g

Heel stack

29 mm

7 mm lower than the catalog median of 36 mm

Drop

0 mm

6 mm lower than the catalog median of 6 mm

Price

$190

30 pricier than the catalog median of 160

Responsiveness

2 / 5

Catalog median 3 / 5

Cushioning

3 / 5

Catalog median 4 / 5

Energy return

3 / 5

Catalog median 3 / 5

Durability

~450 mi

Catalog median ~400 mi

Within the Altra line it is heavier than the brand's median (294 g / 10.4 oz) and sits lower than its median stack (30 mm).

Closest alternatives

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

Altra Lone Peak ALL-WTHR

315 g / 11.1 oz · 29 mm · 0 mm drop · Rock · $180

All-weather Lone Peak with a weatherproof eVent bootie.

Altra Lone Peak NeoShell

310 g / 10.9 oz · 29 mm · 0 mm drop · Rock · $185

Weather-resistant Lone Peak for cold, wet trail days.

Altra Lone Peak 10(2025)

300 g / 10.6 oz · 29 mm · 0 mm drop · Rock · $150

Thru-hiker and ultra favorite: wide, flat, grippy, ground-connected.

Altra Outroad 3

303 g / 10.7 oz · 27 mm · 0 mm drop · Rock · $150

Road-to-trail hybrid for runners who mix pavement and dirt.

Altra Timp 5 GTX

331 g / 11.7 oz · 29 mm · 0 mm drop · Rock · $180

Altra Timp 5 GTX: 29 mm heel stack, 0 mm drop, 312 g — specs from independent lab testing.

Lineage & siblings