Running Shoes HQ
Altra Mont Blanc Carbon
50K race
AltraWomen

Mont Blanc Carbon

Altra's carbon-plated trail racer built for speed on technical terrain and long ultra efforts, with zero drop and high cushioning.

$275MSRP

Pick for Race and Ultra in the Altra trail lineup

Comparable specifications
Use these measurements to compare shoes on equal terms.
Terrain
trail
Primary use
50K race
Races
Ultra, 50K+
Also good for
Trail long run, 50 mile race, Technical trail
Cushion
high
Stability
neutral
Weight
249g
Drop
0mm
Stack
29/29mm
Lug
3.5mm
Plate
carbon
Midsole
Altra EGO MAX (rim) & Altra EGO PRO (core)
Outsole
Vibram Megagrip with Litebase
Upper
Ultra-lightweight, breathable
Widths
standard
Technical trailRoadLightweightUltra distanceLong runsCarbon plate
Our read

A capable ultra-distance racer for runners who want Altra's zero-drop platform with added propulsion from a full-length carbon plate; best suited to technical trail races rather than short, flat efforts.

Ride

29mm zero-drop stack combines Altra EGO MAX and EGO PRO foams for a bouncy, protective ride, while the Carbitex carbon plate adds propulsion without sacrificing the flex needed on technical trail.

Fit

Standard FootShape fit with a roomy toe box for natural toe splay and a secure midfoot lockdown, typical of Altra's neutral trail shoes.

Best for

Long and technical trail races, all-day trail running, and ultra-distance efforts where cushioning and propulsion matter over rugged terrain.

Avoid if

Runners who prefer a heel-toe drop, need max stability features, or are looking for a road racing shoe rather than a trail-specific carbon racer.

Sources
What informed our read. We link out rather than reproduce others’ reviews.