Last tested
2023
Status:ongoing
2024

Raceborg II

Smart choice Race
La Sportiva's new semi-carbon model, designed for training and racing: performance, not excess, is the name of the game
  • Buyer’s Guide reviews
  • In words
  • Technical specifications

Buyer’s Guide reviews

Performance by context
Ascent
Skiing
Walking
Climbing
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in
The charts show our impressions from testing
Product info
Category average
Recommended use
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in
Recommended level
Technical Level
Beginner
Intermediate
Advanced
High level
Weight
lightmedianheavy
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in
In lab
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in

In words

Intro
The new version of the La Sportiva semi-carbon boot is the most race-oriented of the semi-carbon boots in the range, as well as being the lightest. Its racing genes are revealed by the ski/walk mechanism derived from the Stratos VI and the excellent forward ROM. Made from Grilamid and carbon fiber, it's a lightweight, high-performance race model through-and-through, though less extreme than its older sibling, which is up there with the best for unbeatable performance.
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in
product
Walking
With its superior range of motion, this boot leads the way in terms of forward flexion in a semi-carbon boot, while it is more limited in the other direction: worth bearing in mind when you're tearing towards the finish line. It offers a comfortable stride that is fairly short, fast and fluid. The density of the foam liner is such that you can lose a little sensitivity, especially on technical sections, which is to be expected considering the category of use.
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in
Lab
The liner is stiff, robust and comfortable, a far cry from the thinner types used in full-carbon models. A win for comfort and warmth. The high gaiter closes well and doesn't get in the way. Foot entry is average, it's not as easy as the Alien 1.0, but once you're in the fit is forgiving and also suits wider feet. The closure works well, including the one at the top, but you need to get used to it.
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in
Skiing
The fit is roomy and comfortable, but the precise closure at the instep and calf offers good support. The pivot that joins the cuff to the shell is high up and further back. The LaSpo engineers have found the right balance between cuff and shell flex that results in a smooth ride which could make it a leader among semi-carbon boots. It holds until it needs to flex but does so with control; no stress points or unwanted bulging. The ramp angle takes a little getting used to, it's very noticeable and caused by an easily-visible bootboard if you remove the liner.
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in

Technical specifications

LINER MATERIALS
carbon fiber
SHELL MATERIALS
Grilamid
INSERT TYPE
S4 Insert
Buckle description
micro-adjust Spider Ratchet closure system on the shell + race-ready system with adjustable cable
Sole description
La Sportiva RaceGrip
Liner description
Raceborg Bikini Liner
No. of buckles
2
Lean forward
14°/16°/18°/20°
Available sizes
23.5–30 mp including half sizes
Released in
2023
Made in
Italy
Price
900 €
Declared specsMeasured by us
We measured the measure 27.5 to get all the details
735 gr
Individual weight
XXXXX
N/A
Liner weight
XXXXX
N/A
Shell weight
XXXXX
297 mm
External shell length
XXXXX
N/A
External shell width
XXXXX
N/A
Inner shell width
XXXXX
N/A
Pin distance
XXXXX
N/A
Force to 20° back
XXXXX
N/A
Force to 20° forward
XXXXX
75 °
Cuff ROM
XXXXX
N/A
Maximum cuff height
XXXXX
N/A
Maximum tongue height
XXXXX
N/A
Maximum forefoot width
XXXXX
N/A
Maximum ankle width
XXXXX
N/A
Sole thickness at toe
XXXXX
98 mm
Last
XXXXX
Subscribe to unlock all the Buyer’s Guide reviews Subscribe
Already subscribed?
Log in
Top stories
2025
Thoughts
At the heart of every ski

Editorial

2025
Intro
Test center

Where the snow is always present

2025
Intro
Skimo skins

It's not all about grip

2025
Instruction
Boot lab: Boots under the microscope

The laboratory analysis of flex, walkability, and thermal insulation of ski mountaineering boots

2025
Intro
Skimo poles
2025
Intro
Safety, a culture of doubt

Beyond the basic definition, there’s nothing as variable as snow conditions and the human psyche when under emotional stress. That's why, after purchasing the right self-rescue kit and airbag backpack, it’s paramount you do your research, train, scrutinize your decisions and, if necessary, opt for plan B. And, at least for now, don’t rely on artificial intelligence. 

2025
Race
Light
Tour
Free
Awards
Best bindings 2025

Skiaklper's Awards

2025
Intro
Products for mountaineers

Once you’ve chosen your skis, boots and bindings, your thoughts then turn to harnesses, crampons, ice axe and helmet, though perhaps not everyone, and not straight away. While it’s true that when starting out, especially for those transitioning from resort skiing who just want to start surfing some pow, the important thing is to get self-rescue equipment. It’s equally true, however, that the sport we love is a combination of two words: skiing and mountaineering.

2025
Split All Mountain
Intro
Boards, boots, and bindings for splitboarding

Materials are evolving, which is increasing the opportunities for pushing the boundaries of mountaineering splitboarding. It’s no longer just about easy tours, a few jumps and a beer. Thanks to innovative new setups and growing knowledge within the community, long ascents and steep terrain no longer intimidate.

2025
Intro
Skimo bindings

They’re probably the element of your setup that’s evolved the most and seen the most crossover between disciplines. Which is why in general lighter bindings have adapted to make allowances for the trend for opting for wider skis, with hybrid drilling patterns and a greater selection of ski brakes. But the aspect that requires most scrutiny is the height difference between the front and rear pins.

Recommended pairing
tested 2025
Skis
Race
Ski Trab
Gara
Width Center: 64 mm
Weight: 760 g
Top match
tested 2025
Skis
Race
Dynafit
Mezzalama
Width Center: 64 mm
Weight: 790 g
Top match
tested 2024
Skis
Light
Salomon
MTN 80 Carbon
Width Center: 80 mm
Weight: 1.000 g
Top match
PRO'S CHOICE RACE
tested 2025
Skis
Race
Ski Trab
Gara World Cup 70
Width Center: 64 mm
Weight: 710 g
tested 2024
Skis
Race
Atomic
Backland 62 UL Vert
Width Center: 62 mm
Weight: 650 g
tested 2024
Skis
Race
Fischer
Transalp RC Carbon
Width Center: 65 mm
Weight: 690 g
preview 2025
Skis
Race
Made for women
Ski Trab
Gara World Cup 60 Lady
Width Center: 64 mm
Weight: 685 g
preview 2025
Skis
Race
Made for women
Movement
Race Pro 66W
Width Center: 66 mm
Weight: 620 g
tested 2025
Skis
Race
Hagan
Ultra 65
Width Center: 65 mm
Weight: 700 g
preview 2025
Skis
Race
Kästle
TX 65 WC
Width Center: 65 mm
Weight: 690 g
tested 2025
Skis
Race
Movement
Race Pro 66
Width Center: 66 mm
Weight: 675 g
SKI OF THE YEAR RACE
tested 2025
Skis
Race
Dynastar
M-Pierra Menta
Width Center: 65 mm
Weight: 700 g
tested 2025
Skis
Race
Elan
Lynx 65 UL
Width Center: 65 mm
Weight: 690 g
tested 2025
Skis
Race
Ski Trab
Gara World Cup 60
Width Center: 64 mm
Weight: 700 g
tested 2025
Skis
Race
Dynafit
DNA Pro
Width Center: 64 mm
Weight: 690 g
tested 2025
Skis
Race
Atomic
Backland 65 UL
Width Center: 65 mm
Weight: 670 g
Recommended setup
preview 2024
Bindings
Race
ATK Bindings
SL Brake World Cup
Type: full pin
Weight: 135 g
Top match
preview 2025
Bindings
Race
Light
Kreuzspitze
RS
Type: full pin
Weight: 169 g
Top match
preview 2025
Bindings
Light
Dynafit
Mezzalama+
Type: full pin
Weight: 165 g
Top match
preview 2025
Bindings
Light
Plum
R170
Type: full pin
Weight: 170 g
Top match
preview 2025
Bindings
Race
ATK Bindings
Trofeo Brake
Type: full pin
Weight: 145 g
tested 2025
Bindings
Race
Ski Trab
Titan Gara WC + Stopper
Type: full pin
Weight: 160 g
preview 2025
Bindings
Race
ATK Bindings
Revolution World Cup
Type: full pin
Weight: 105 g
BINDING OF THE YEAR RACE
tested 2025
Bindings
Race
ATK Bindings
Revolution Brake World Cup
Type: full pin
Weight: 122 g
tested 2025
Bindings
Race
Plum
R World Cup
Type: full pin
Weight: 144 g
preview 2025
Bindings
Race
Grizzly
GR 98 II
Type: full pin
Weight: 98 g
tested 2025
Bindings
Race
Dynafit
DNA+
Type: full pin
Weight: 128 g
tested 2024
Bindings
Race
Grizzly
GR 48
Type: full pin
Weight: 48 g
Similar products
tested 2025
Boots
Race
Made for women
Scarpa
Alien 1.0 WMN
Buckles: 2
Weight: 735 g
tested 2025
Boots
Race
Scarpa
Alien 1.0
Buckles: 2
Weight: 785 g
SMART CHOICE RACE
tested 2025
Boots
Race
La Sportiva
Stratos Hybrid
Buckles: 2
Weight: 728 g
PEOPLE'S CHOICE RACE
tested 2025
Boots
Race
Dynafit
DNA
Buckles: 2
Weight: 810 g
BOOT OF THE YEAR RACE
tested 2025
Boots
Race
La Sportiva
Stratos VI
Buckles: 2
Weight: 530 g
PRO'S CHOICE RACE
tested 2025
Boots
Race
Scarpa
Alien 4.0
Buckles: 2
Weight: 610 g
tested 2025
Boots
Race
Dynafit
DNA by Pierre Gignoux
Buckles: 2
Weight: 510 g
tested 2024
Boots
Race
Dynafit
Mezzalama
Buckles: 2
Weight: 875 g