Cross-Country Skiing Explained (Part 5): Classic Cross-Country Ski Boots

Copyright © 2017 Jared Manninen

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There are countless variations of classic cross-country ski boots in circulation. The styles range from vintage patent leather shoes designed for use with the 3-pin binding system (NN) and will most likely be found in a thrift store or at a garage sale to high-tech and high-top styles of backcountry boots that feature ankle support and the latest in stink-free insulation materials.

In spite of all the options that you can find new or used, however, you really only need to consider three key aspects when selecting a classic cross-country ski boot. And what makes the selection process even easier is that the first two considerations are non-negotiable.

The three key considerations when selecting an appropriate classic cross-country ski boot are:

  1. Fit
  2. Compatibility
  3. Function (or intended use)

1) Fit of Classic Cross-Country Ski Boots

Without question, finding a boot that’s comfortable to wear is the most important part of selecting an appropriate classic cross-country ski boot. If the boot you’re testing doesn’t feel comfortable within the first minute or two of trying it on, put it back on the shelf and try another size, style, or brand of boot.

Unless you’re looking to purchase a leather combat boot made in 1993, for example, gone are the days of buying footwear with the hopes of “breaking them in.”

Sure, you’ll have to get used to any new footwear and there will be some minor adjustments to the way they fit in the long run (i.e. foot beds will compress and the insulation materials will conform to your foot). However, shoe manufacturers today are so meticulous in their design and production of footwear that you’re going to experience very minimal break-in.

Most technical footwear (ski boots, hiking boots, running shoes…) is designed to maintain its structure for countless miles of use. This is great for the longevity of the footwear, but means that it’s not going to alter very much over the course of its lifetime.

Compare that older combat boot with any type of running shoe or hiking boot today and you’ll notice a major difference in design between the two. The combat boot will look like it was made with one big slab of leather while those hiking boots will incorporate about two dozen different panels and types of materials. And all those seams between the various elements of the footwear are designed to hold.

Copyright © 2019 Jared Manninen
Fischer XC Control Classic Cross-Country Ski Boot. This is a classic cross-country ski boot that has about as much “ankle support” as any track ski boot will ever have. Although, the plastic arm that extends upward and features the wraparound hook and loop strap is quite flexible. Of all my boots I do love this one the most, but it’s because it fits my feet the best and is warm. © Jared Manninen

Also note that each manufacturer creates their footwear based on what they believe to be an idealized shape of a foot. You’ve probably already found this to be the case when buying regular shoes.

Some brands simply fit different than others. The same goes for classic cross-country ski boots.

Along the same lines of companies making boots based on an idealized shape, many companies no longer bother with making boots in different widths. If the boot fits too narrow or wide, try another brand.

I lean toward wearing Fischer boots because they are typically considered to be some of the wider boots on the market, and my feet are wide. At my winter job (cross-country ski rental shop) we use SNS Pilot bindings on our regular rental skis. Therefore, we use a Salomon boot for use with those skis.

Unfortunately, Salomon footwear generally is too narrow for my feet, so I found a pair of basic classic boots made by Atomic (which run wider than Salomon and still are compatible with SNS Pilot bindings) to wear when I use our rental classic skis.

Wearing a thinner or thicker sock can help with boot width issues, but this will only work if the boot is comfortable to begin with and the insulation of the boot is either too plush or not very thick. Different socks won’t compensate for an incompatible (with your foot) shaped boot.

Copyright © 2019 Jared Manninen
Atomic Classic Cross-Country Ski Boot. This boot is very similar to my Fischer Touring boot. I own this boot because Atomic runs slightly wider than Salomon boots (and I have wide feet), and it’s compatible with the SNS Pilot binding system. © Jared Manninen

As far as how the actual fit of the boot should feel, I always recommend wearing a classic boot that fits snug but isn’t claustrophobic or painful like an alpine skiing boot.

You should also have wiggle room for your toes. Your heels shouldn’t lift up. Classic boots are supposed to be soft and flexible enough to allow your feet and ankles to flex naturally, since diagonal striding (classic cross-country skiing technique) requires you to move in a similar way to running.

Ultimately, you shouldn’t even notice the boots on your feet because they’re so comfortable.

One last note is that if you wear orthotics or other specialized foot beds, be sure they fit in the boot you’re testing out (and that your foot also fits in the boot!).

Since most of the binding systems in cross-country skiing are not compatible, you’ll have to find boots that fit comfortably and are compatible with the bindings on the skis you’ll be running.

Copyright © 2019 Jared Manninen
Four common cross-country ski boot binding systems currently on the market. None of these binding systems are compatible with each other (except for the noted ones “not pictured.” The two boots on the right are designed for use off-track and in the backcountry. © Jared Manninen

2) Compatibility of Classic Cross-Country Ski Boots

The boots you select need to be compatible with the types of bindings you have on your skis. This is a no-brainer for most people, but it’s not always as obvious or easy to determine as one might think.

I’ve met many people who’ve purchased a set of used skis (with bindings already mounted) at a ski swap and then picked up a pair of boots elsewhere only to find out that the two pieces of gear weren’t compatible.

Manufacturers of cross-country ski boots have traditionally made their boots compatible with one binding system or another. Fortunately, there’s a trend toward embracing the NNN binding platform (which has been around for decades).

However, there are numerous binding systems still in existence (see Cross-Country Skiing Explained (Part 4): Classic Cross-Country Ski Bindings).

The reason I wear mostly Fischer boots is because they fit my feet. Therefore, I’ve used NNN bindings on my skis because that’s the type of binding system Fischer has used for a number of years.

An example of another boot/binding system is made by Salomon. For many years they’ve designed their own binding system called SNS (Salomon Nordic System) Profil and Pilot (and a ton of variations). Of those two main styles, Pilot boots can work with some Profil bindings (but only some!), but not the other way around (i.e. Profil boots don’t work with Pilot bindings).

Since 2016, Salomon has been featuring an NNN compatible option known as Salomon ProLink. So, if I wanted to, I could now use ProLink boots with my Fischer NNN bindings.

Copyright © 2019 Jared Manninen
SNS Profil Classic Cross-Country Ski Boot. Although the SNS Profil system is only a one-bar system, it’s not compatible with NNN. This is an older system that has been slowly fading away for years. However, Salomon continues to support it by producing at least one or two models of boot featuring this binding system. © Jared Manninen

Mostly you just need to know that there are different bindings systems available and that your boots and bindings need to be compatible.

Test the two together when in doubt. I’m not going make a diagram of the countless binding systems and their compatibility. However, here’s a short list of common things I see:

  • Any NNN boot will work with an NNN binding.
  • Any SNS Pilot boot will work with a Pilot binding.
  • NNN will not work with SNS Profil, and vice versa.
  • SNS Pilot boots will work with some SNS Profil bindings, but test them together first to determine this. One of the gaps or spacers in Profil bindings doesn’t always accommodate the second bar on a Pilot boot. This makes it so that it feels like you have a huge lump beneath the ball of your foot.
  • NNN BC is not compatible with NNN, and vice versa.
Copyright © 2019 Jared Manninen
Many people assume these two boot/binding systems are the same because they both say “NNN,” but this is not true. As you can see, the NNN BC (backcountry) version on the left features a much larger bar. © Jared Manninen

3) Function (intended use) of Classic Cross-Country Ski Boots

Function is less of a concern than fit or compatibility when it comes to classic cross-country ski boots. Unless you’re looking for classic boots designed for racing (light and minimal) or you’re planning to do some heavy-duty backcountry cross-country skiing (stout boot with more insulation and support), you can pretty much use any standard touring or classic boot for most situations.

Copyright © 2019 Jared Manninen
Fischer BCX 6 (3-Pin version) and Alpina 3-Pin Touring Cross-Country Ski boots. Few people use 3-pin bindings on lightweight skis today. The 3-pin (aka NN – Nordic Norm) binding is excessive for most skis used on groomed terrain, so people have transitioned away from it for general use. However, the 3-pin binding system works well on much wider backcountry cross-country skis, hence the beefy boot on the left. © Jared Manninen

The type of boot should be commensurate with the type of ski and binding system. For example, you wouldn’t want to mount a basic NNN binding onto a wide backcountry cross-country ski because you would risk breaking the binding once you apply the force necessary to turn a big ski under backcountry conditions (deep snow and variable terrain).

You also wouldn’t want to mount a 3-pin binding on a track ski because the binding would be hanging far off of the edges of the ski. Although 3-pin was the standard for years, it was ultimately found to be too much binding for basic needs and has since been left for use with a bigger backcountry setup.

For racing, you want a classic boot that’s as streamlined, lightweight, and as minimal as possible (and requires a basic binding system). A race-oriented classic boot is essentially a track shoe with a built-in gaiter. I find that this is not usually what people are looking for, however.

Fischer Carbon Lite Classic Cross-Country Ski Boot. A lightweight classic boot designed more for racing. © Jared ManninenFischer Carbon Lite Classic Cross-Country Ski Boot (interior). Pulling back the gaiter, you can see that the "boot" looks more like a track shoe. This is about as minimal as it gets. © Jared ManninenFischer Touring Classic Cross-Country Ski Boot. A very basic "touring" or classic cross-country ski boot. There's nothing wrong with this boot, but it's definitely not nearly as lightweight or made with the same high quality materials as the carbon lite racing-oriented classic boot. © Jared ManninenFischer Touring Classic Cross-Country Ski Boot. There is no ankle support, per se, with this touring boot, but the insulation materials do extend much higher than the carbon lite racing-oriented boot. There's also a metal loop at the base of the zipper designed to hold a larger gaiter in place. © Jared Manninen

Rather, I see many people seeking a stiffer boot with ankle support. This is usually because so many people come to cross-country skiing from an alpine skiing background and expect boots to be stiff and more supportive.

However, classic boots need to be relatively soft and flexible to let your feet and ankles flex naturally (in order to properly perform diagonal striding). I do agree that a boot that offers more support does make descending hills easier, but ultimately you’re not looking to replicate the experience of an alpine ski setup where you’re completely locked into the skis.

If you really want more support, develop the small muscles in your feet, ankles, and calves. You could also diversify your downhill skills by learning how to perform Telemark turns and modified parallel turns (versus primarily snowplowing).

I do recommend a heavier-duty backcountry cross-country ski boot if you plan to do more off-piste skiing. Although, the ankle support is pretty minimal even with a backcountry-oriented cross-country ski boot.

The upper ankle support found on this type of boot usually consists of an arm reaching up from the lower portion of the boot to a point above the ankle with a strap you then wrap around your leg. There’s still a lot of movement allowed with this system, but it is helpful.

Also, with a high-top style boot you’ll have more insulation and a higher gaiter that will keep your ankles warm and free of snow.

Fischer OTX 3 (NNN BC version).Fischer BCX 6 (NNN BC version).Fischer BCX 6 (3-Pin version).Fischer BCX 6 (NNN BC version) and OTX 3 (NNN BC version). Both boots fit an NNN BC binding system, but the BCX 6 version provides more ankle support. I use the BCX 6 with 88 mm wide cross-country skis and the OTX 3 skis with 62 mm wide cross-country skis. © Jared ManninenFischer BCX 6 (3-Pin version) and Fischer BCX 6 (NNN BC version). Both of these rugged boots are designed in a similar fashion and used for heavier-duty backcountry cross-country skiing. However, I find that the 3-pin version does provide more control on wider cross-country skis because the 3-pin system is just a more rugged binding than NNN BC. I use the 3-pin on a set of 112 mm cross-country skis and the NNN BC on a set of 88 mm cross-country skis. © Jared Manninen

The most important thing when looking for an appropriate classic cross-country ski boot is to make sure it fits comfortably. I realize this can be a chore, however, because there are fewer and fewer shops around that carry Nordic gear.

However, I urge you to make the effort to actually find a store and try the boots on before buying because the fit of the boot highly affects your skiing.

The bottom line is that if it’s not comfortable, you’re not going to enjoy the skiing. Fortunately, most basic classic cross-country ski boots will suffice for the majority of people’s skiing needs.

And once you have that basic boot, you can then start looking for something more specific (if you suffer from gear lust like I do).

Bonus points to those of you who noticed that the header pic actually features rows of combination boots (i.e. soft enough for classic skiing, but enough support to skate ski) versus a true or dedicated classic cross-country ski boot.

Copyright © 2019 Jared Manninen
Breaking trail in the Tahoe backcountry on February 5, 2019. © Jared Manninen

Please note that I wrote Cross-Country Skiing Explained with the beginner or intermediate cross-country skier in mind. This is the demographic for whom I most often served while working in the outdoor recreation industry at Lake Tahoe. I basically treat these articles as extensions of the conversations I’ve had with those customers. That said, expert skiers could take away something of value from this article. Just know that I don’t intend to address racing-oriented philosophy, technique, or gear selection.

More articles in the Cross-Country Skiing Explained Series:

For information about buying cross-country ski gear (for beginners), please read the following articles: