Sub-1,000 g Ski Mountaineering Boot
Atomic Backland Carbon UL Alpine Touring Boot
The Atomic Backland Carbon UL is a ski mountaineering boot for skiers chasing vertical, where every gram on the foot is paid for on every step. A carbon loaded PA shell under a full carbon fiber cuff holds a usable flex at 982 g per boot in a 26/26.5, and the 98 mm last runs narrow and low volume for a locked-in fit. With 74 degrees of cuff rotation and the Free/Lock 5.0 mechanism, the Backland Carbon UL is built for big ascents and controlled descents rather than for driving a wide ski.
Expert Fit Review Fit profile and recommendations reviewed by CCBB bootfitters.
Is This the Right Boot for You?
Best For
Fit, experienced tourers chasing vertical on skis under 100 mm who want a sub-1,000 g boot and ski exclusively on pin bindings.
Consider Another Boot If
You want to drive a wide ski, you need a sole that fits frame, MNC, or alpine bindings, or your foot needs a 100 mm or wider last.
CCBB Boot Ratings
Uphill Efficiency
74 degrees of rotation at 982 g
Downhill Performance
Carbon fiber cuff, minimal closure
Walking Comfort
74 degrees at the lightest weight in the line
Transition Speed
Free/Lock 5.0 external single lever
Rating scale: 5 = top of its class, 4 = excellent, 3 = good, 2 = specialized or below average, and 1 = limited.
CCBB Fit Profile
Overall VolumeLow
Toe BoxNarrow
Forefoot VolumeNarrow
Instep HeightLow
Heel HoldGood
Ankle HoldGood
PunchabilityLimited
Heat MoldableYes
Why We Like It
- At 982 g per boot in a 26/26.5 the Backland Carbon UL is 184 g lighter per boot than the Backland Pro on the same 98 mm last.
- A full carbon fiber cuff over a carbon loaded PA shell holds flex at a weight where most boots give it up entirely.
- 74 degrees of cuff rotation matches the heavier Backland boots, so nothing is traded away in stride to reach the weight.
- The Free/Lock 5.0 mechanism is external, so it clears ice and throws in one motion with a pole tip at a cold transition.
Best Uses
- Ski mountaineering and high-vertical days
- Spring missions, traverses, and technical objectives
- Skis under 100 mm underfoot
- Narrow, low-volume feet on a 98 mm last
- Pin binding setups only
Bootfitter's Advice
The Backland Carbon UL runs a 98 mm last, narrow and low volume, with a regular-height cuff and a ramp angle of 4 degrees. This is a performance fit and it is not the boot for a wide forefoot or a high instep. Confirm size with a shell fit, and use the included size adjuster, liner laces, and liner spoiler before considering shell work.
Fit work is the real constraint here. The shell is carbon loaded PA and the cuff is carbon fiber, so the material that would normally accept a punch is minimal and the cuff accepts none. We can do modest work on the forefoot and we mold the 3D Platinum Tour UL liner, but a foot needing significant shell work belongs in the Backland Pro instead.
Fit profile reviewed by CCBB bootfitters. Final sizing should be confirmed with a shell fit whenever possible.
📏 Technical Specifications Manufacturer specs · Click to expand
Fit and Construction
Weight982 g per boot (size 26/26.5)
Last98 mm, narrow width and low volume
Range of Motion74 degrees
ShellCarbon loaded PA, a polyamide reinforced with carbon fiber
CuffCarbon fiber, regular height across the size run
Forward Lean13, 15 (default), and 17 degrees
Ramp Angle4 degrees
Size Range24/24.5 to 30/30.5
Features and Compatibility
Walk ModeFree/Lock 5.0 with Frictionless Pivot, 74 degrees of cuff rotation
Shell ClosureCross Lace 2.0, a Z-cable routed through the lower buckle
Cuff ClosureUltimate Strap
Liner3D Platinum Tour UL, heat-moldable and washable, with Dry Fit foam
SoleSkywalk non-norm sole with investment cast tech inserts
Binding CompatibilityPin/tech (low-tech) bindings only. The sole meets no ISO norm, so it is not compatible with alpine, GripWalk, frame, or MNC bindings.
Shell TechnologyProlite, Memory Fit, Stretch Guard
IncludedSize adjuster, liner laces, liner spoiler
Compare the Atomic Backland Carbon UL
Backland Carbon UL vs. Atomic Backland Carbon
Both run a 98 mm last and a non-norm sole. The Atomic Backland Carbon weighs 1,179 g per boot and closes with a cam strap and aluminum buckles. The Backland Carbon UL strips 197 g per boot with a carbon fiber cuff and an Ultimate Strap. The Carbon skis better, the UL climbs better.
Shop the Atomic Backland Carbon
Backland Carbon UL vs. Scarpa F1 LT
Both are sub-1,000 g boots built for high-vertical days on pin bindings. The Scarpa F1 LT uses a BOA forefoot closure and a different last shape. The Atomic Backland Carbon UL runs a 98 mm last with a cable closure and 74 degrees of rotation. Fit decides this one.
Shop the Scarpa F1 LT
Backland Carbon UL vs. Tecnica Zero G Peak
The Tecnica Zero G Peak is the other serious option in the sub-1,000 g class, on a 99 mm last with a single-lever walk mechanism. The Atomic Backland Carbon UL runs a narrower 98 mm last and 74 degrees of rotation. Both are pin-only boots, so the choice is fit and flex feel.
Shop the Tecnica Zero G Peak
Common Questions
Who should buy the Atomic Backland Carbon UL?
Fit, experienced tourers who chase vertical and ski skis under 100 mm on pin bindings. The Atomic Backland Carbon UL suits a narrow, low-volume foot on a 98 mm last and rewards efficiency over downhill power.
What bindings work with the Atomic Backland Carbon UL?
The sole is a Skywalk Non-Norm sole with investment cast tech inserts. Pin/tech (low-tech) bindings only. The sole meets no ISO norm, so it is not compatible with alpine, GripWalk, frame, or MNC bindings. Check the binding, not the boot, if you are unsure: if it does not take pins, it does not take this boot.
Can the Atomic Backland Carbon UL be punched?
Only modestly. The shell is carbon loaded PA with minimal material to work with, and the carbon fiber cuff accepts no punching at all. We mold the 3D Platinum Tour UL liner and can do light forefoot work. A foot needing real shell work should look at the Atomic Backland Pro.
What flex is the Atomic Backland Carbon UL?
Atomic publishes no numeric flex index for the Atomic Backland Carbon UL, and we do not assign one. Flex numbers are not standardized between brands and are least meaningful at this weight. The carbon fiber cuff is stiff for a sub-1,000 g boot but softer than any Backland XTD.
How does the sizing run on the Atomic Backland Carbon UL?
The Atomic Backland Carbon UL covers two Mondo sizes per shell and runs from 24/24.5 to 30/30.5. The fit is narrow and low volume, so confirm size with a shell fit rather than converting from a street-shoe number.
Is the Atomic Backland Carbon UL warm enough for winter touring?
The 3D Platinum Tour UL liner is thin and built for high-output days and moisture management. Skiers with cold feet, or those touring long low-output winter days, often add a warmer aftermarket liner.
Our Verdict
The Atomic Backland Carbon UL is the boot in this line for skiers whose day is decided on the way up. It weighs 982 g per boot at 26/26.5, tours with 74 degrees of cuff rotation, and holds a usable flex through a carbon fiber cuff. The costs are real: a narrow 98 mm last, limited scope for fit work, and a non-norm sole that runs pin bindings and nothing else. Skiers who want one boot for touring and resort days should look at the Backland XTD line instead.
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