Skip to Main Content

How to Choose Touring, AT & Randonnee Ski Bindings

Alpine touring (also known as "Randonnée" or "AT") ski bindings allow you to lift your heels naturally while skinning uphill or moving over rolling terrain, then lock your boots down and use regular alpine skiing technique when you want to go downhill. These are the bindings you use to access the backcountry terrain. Used in combination with climbing skins and alpine touring boots that have a hinging upper cuff, AT bindings make traveling over snowy ground remarkably fast and efficient. If you’re planning on earning your turns and backcountry skiing, you’ll need to get some AT bindings. In this guide, we’ll break down how to choose touring bindings, breaking down tech vs frame bindings, and other considerations.

Things to Consider When Choosing Touring Bindings:

  • What type of skiing are you planning to do with this binding? "Burly backcountry lines with air" is different than "fast and light, long-distance touring.”
  • Do you plan to use this binding for lift-served skiing as well as touring?
  • Does this binding require a specific type of boot?
  • Are you willing to carry the extra weight of a heavy AT binding?
  • Are you willing to accept the downhill limitations of a light AT binding?

Types of AT and Touring Ski Bindings

AT bindings fall into two categories, Frame and Tech:

Frame Touring Bindings

Frame touring bindings have toe and heel pieces connected by a frame or rails and often work with both alpine and alpine touring ski boots. Frame AT bindings are typically heavier, but give skiers an experience that is more similar to traditional alpine ski bindings.

  • Skis like an alpine binding
  • Compatible with all boots
  • Heavy weight
  • Can affect the flex of the ski

Tech Touring Bindings

“Tech" ski bindings are sometimes referred to by the brand name Dynafit, although there are a number of brands that make them. They rely on a set of pins to hold the toe (and with a few exceptions, the heel) in place and require a special boot. Tech bindings are lightweight. There’s a growing selection of tech bindings, with more choices in both ultra light and more elastic freeride models.

  • Light weight
  • Doesn’t affect ski flex
  • Less elasticity, transmits more feedback while skiing
  • Need boots with tech inserts

Touring Ski Binding Elasticity, DIN & Release Value

Keep in mind that tech binding release values appear to use the same ISO (International Standards Organization) and DIN (Deutsches Institut für Normung, a German standards organization) scale as alpine bindings, but are not ISO/DIN certified like alpine bindings - the elasticity of tech bindings and the force required to cause a release, won’t necessarily be the same as an alpine binding set at the same number. Currently, a limited number of tech bindings are certified to the ISO/DIN 13992 standard used for frame AT bindings. These include many of the newer designs with elastic travel at the heel, as well as "hybrid" designs like the Marker Kingpin and Fritschi Tecton.

Unlike alpine bindings which release laterally at the toe, most tech bindings currently on the market have a fixed toe and are designed to release initially from the heel in both the lateral and vertical directions. When the boot has travelled far enough out of the normal ski position, it levers the toepiece open and the boot pops out. Recently, several exceptions to this have appeared on the market - the Fritschi Vipec and Tecton bindings release laterally at the toe, for instance. The toe piece also has some side to side elasticity, while the newer Dynafit models like the Radical 2.0 and Rotation series have some free rotation at the toe before a release is initiated. This trend should continue as more tech bindings evolve to meet the demands of freeride skiers.

How to Choose Touring Ski Bindings

All touring bindings offer some sort of compromise between their skiing performance and their uphill performance. Choosing the right binding comes down to finding the right balance for you, your style of skiing, and your goals.

The best bet for many people is to start at the heavier end to get a feel for the sport without jeopardizing their enjoyment of the downhill. Some people simply swap their alpine bindings for AT bindings, get some climbing skins, and head out - with proper backcountry safety gear and knowledge, of course.

Up vs. Down

What's best for the up - light weight and range of motion - is at odds with what works best for skiing down, namely width, mass, and stiffness of boot and binding. The best binding for you will vary depending on your skiing style, ability level, fitness level, conditions, and the type of touring you plan to do. Being realistic about these factors will help you choose the right backcountry ski binding. Deciding the relative importance of uphill and downhill performance is a good start to choosing the right AT bindings.

Strength vs. Weight

A burly ski combined with a heavy frame binding will ski as well as most alpine setups and be suitable for heavier skiers or those who ski aggressively in the backcountry. It also appeals to those who can only justify one pair of skis and boots for both lift-served and touring days. The downside is weight - extra pounds on your feet are slower on the uphill, which takes its toll over a long day of touring.

A very light ski and boot with a tech binding will let you fly up the skintrack but doesn’t provide the same downhill and retention capabilities of a more robust, heavier setup. Tech bindings require a boot with molded-in toe fittings and a slotted heel plate. Some super light tech boots will only work with tech bindings, but many boots will work with frame bindings as well. Super light setups are appropriate for people who plan to use their binding predominately for touring vs. skiing in a resort and don’t plan to catch a lot of air or ski super aggressively. They are great for long trips, spring and summer tours where deep fresh snow and crust are rare, and randonnée racing.

Why You Should Choose Heavier Frame Bindings

Heavier frame bindings like those from Marker, Salomon/Atomic and Tyrolia have the same sort of retention and elasticity as their alpine counterparts and use many of the same components. These bindings can be used reliably for inbounds skiing by aggressive skiers and are suitable for wide and heavy skis. A frame binding and stiffer AT boot can be a good choice for skiers trying to do it all with one setup, or hard-charging skiers transitioning from alpine setups.

Note: Not all frame bindings are certified for use with all alpine touring soles - check the manufacturer's recommendations to ensure that your boot is compatible with the binding you choose.

Why You Should Choose Lighter Frame Bindings

Lighter frame bindings from Fritschi and Marker can be the right choice for those who mix touring and lift-served skiing, want to lessen the total weight of their setup, and aren’t as concerned with charging hard and fast. These bindings can often be used with almost any touring boot and will also fit alpine boots. The step-in operation and release settings will be similar to alpine bindings.

Why You Should Choose Tech Bindings

Choosing a tech binding and boot combination may be the best choice if you plan on touring far or fast. The lighter weight and smoother mechanical action will save you energy on the uphill, and you’ll cover more ground with less fatigue. Light, smooth and less aggressive skiers often use tech setups successfully for inbounds skiing, and recently introduced tech bindings like the Marker Kingpin, Fritschi Tecton and Salomon/Atomic Shift, which are heavier but feature greater heel elasticity and higher release values have also proven reliable for lift served skiing.

Keep in mind that most frame bindings function like alpine bindings for entry and exit (the only difference is a locking switch to convert from tour to ski mode), but tech bindings require a short learning curve - this adjustment period might not appeal to everyone, especially newcomers to touring. Recent tech designs from Dynafit, G3, Fritschi, Marker and Salomon continue to make use of the standard tech fittings while offering improved elasticity and extended release value range; these models may prove to be viable "quiver of one" solutions for a wide range of skiers.

Touring Bindings & Ski Boot Sole Compatibility

Frame AT bindings are generally designed to work with both flat ISO/DIN 5355 Alpine soles and rockered ISO/DIN 9523 Alpine Touring soles, and will also be compatible with proprietary rockered soles like WTR (Walk-to-Ride) and GripWalk. First generation Guardian and Tracker bindings were compatible only with ISO 5355 and Walk-to-Ride soles. ISO/DIN 9523 soles exist both with and without tech toe and heel fittings, but the fittings are required to use tech bindings. To further complicate matters, there are tech boots with shortened soles that do not meet the shape requirements of ISO/DIN 9523 and work only with tech bindings. If in doubt about a specific boot and binding combination, ask your binding tech.

Read More About Ski Boot & Binding Compatibility Here >>>

Common Touring Binding Questions

  • Can I telemark on AT bindings?
    No. AT bindings aren’t designed for the stresses of telemark skiing. Furthermore, AT bindings pivot in front of the toe, while telemark bindings and boots are designed to flex at the ball of the foot with a spring for rebound.
  • Can I use alpine boots with touring bindings?
    It depends. Most frame-type AT bindings have enough toe height adjustment to use with an alpine DIN boot, but tech bindings will not accept them. Also, skinning for long periods in heavy alpine boots that do not have a hinging hike mode can be quite uncomfortable.
  • Can I use a tech binding for my everyday lift-served skis?
    Maybe. Lighter, smoother skiers have been using traditional tech bindings for lift skiing for years, and the newer ISO 13992 certified tech bindings with greater elasticity and higher release values are beginning to be used by heavier expert skiers for lift served skiing, but there are limits. Remember that tech bindings may not perform like the alpine bindings you've been using even when adjusted to the same ISO/DIN settings.
  • Can I use a tech binding with a wide powder ski?
    Probably. Wide skis place more stress on the boot/binding connection than narrow ones, but many people use this combination successfully. It’s best to match your setup throughout for the best skiing experience. This means pairing a lightweight ski with lightweight bindings and boots, or a big ski with a more burly binding and boots.
  • Can I use a frame-type AT binding with big skis as my only setup?
    Yes. Heavier frame bindings often use the same release mechanisms as their alpine counterparts and are extremely reliable.
  • How about adapters that let me use the alpine bindings I already own?
    There are a few systems that allow you to go into tour mode and still use your alpine bindings for skiing down: The SI&I CAST System - This system allows you to use regular alpine bindings for the descent, but slide in a Dynafit Radical toepiece instead of your regular alpine toe for skinning. The CAST system requires a modification to your alpine boots so that they can be used with the Dynafit toes. The MFD Alltime Plate - Plate is mounted to your skis, alpine bindings are mounted to it, and the MFD plate hinges up and down - the MFD system is heavy and no longer in production. The BCA Alpine Trekker - They fit into your alpine bindings and hold your boots securely while allowing the heels to lift; you remove them and put them in your pack to ski down. These options could be a solution if you prefer your alpine bindings with extremely high release values, don’t need to skin far, or aren’t afraid to carry the extra weight uphill.

We recommend that backcountry travelers take an AIARE Level One class or equivalent and practice the skills they learn there regularly with their partners. Here are some great resources for avalanche safety education:

— American Institute for Avalanche Research and Education
— American Avalanche Association
— Northwest Weather and Avalanche Center

You should carry an avalanche beacon, shovel and probe when travelling in avalanche terrain and know how to use them. Backcountry travel requires an acceptance of the risks involved (avalanches are not the only danger) and implies a willingness to take responsibility for educating oneself about these dangers and ways to mitigate them.

This is evo. We are a ski, snowboard, wake, skate, bike, surf, camp and clothing online retailer with physical stores in SeattlePortlandDenver, Salt Lake City, and Whistler. Our goal is to provide you with great information to make both your purchase and up-keep easy.

evo also likes to travel to remote places across the globe in search of world-class powder turns, epic waves, or legendary mountain biking locations through evoTrip Adventure Travel Trips. Or, if you prefer to travel on your own, check out our ski & snowboard resort travel guides, and mountain bike trail guides


Still have questions? Please give our customer care team a call at 866-386-1590, Customer Care Hours. They can help you find the right setup to fit your needs.