Mountaineering Boots: When You Need Them and Which Ones

Boots. There are several different types and they serve different purposes. When traveling as a climber, I always try to carry as little as possible, and I never carry extra gear unless I know exactly why I am carrying it. Thus, when to use mountaineering boots as opposed to hiking boots or trail runners is an easy decision to make once you understand the characteristics of each boot type.

When to use Mountaineering Boots vs Hiking Boots.

Sticky rubber soles on hiking boots and trail running shoes can be okay on slippery rocks but will NOT reliably support crampons on snow and ice. If you need to use crampons on a mountain, then you need a boot that is rated for use with crampons. That means a stiff soled, straight shafted boot with a snug fitting rubber toe and heel. If all you’re going to be doing is hiking on dry trails, then you don’t need a mountaineering boot – a sturdy pair of hiking boots or trail running shoes will suffice.

Boot categories and what each does

There are generally a few main categories of mountaineering boots. What I see most is that single boots are for three-season alpine climbing and general mountaineering of moderate nature (for example: mid to high level alpine routes in the Andes, Alps or Cascades and need to be warm enough for cold weather, but light enough for climbing). These types of boots can be double boots with removable inner boot liners which can be dried overnight separately from the outers. Examples of single mountaineering boots are the single boots such as the Scarpa Charmoz or the La Sportiva Trango Tech. Examples of double boots are the warmest mountaineering boots such as the Scarpa Phantom 8000 or the La Sportiva G2 SM for the highest altitude (over 5,500m/18,045ft) and coldest weather, ski mountaineering boots are much lighter than these typical mountaineering boots (for example: the Dynafit, or the Scarpa F1) for the type of mountaineering that ski-tourers perform and require, but these can only be used with very specific types of crampons.

Crampon compatibility ratings

Boot ratings for crampons are B1, B2, B3 (boot) and C1, C2, C3 (crampon). The easiest way to find compatible footwear and crampons is to compare their ratings. A C1-rated crampon can be used on a B1-rated boot and stiffer. A C3-rated crampon needs a B3-rated boot. If in doubt, check at a mountaineering shop specializing in equipment. They will match up a boot with the right crampons for you. I have written down this information based on my notes from 2024 and 2026. It holds true.

Cost reality

Mountaineering boots are pricey items to purchase for a number of reasons. In addition to being rather heavy and stiff, the boot needs to be capable of protecting the bottom of the foot from crampon points. The boots are divided into a number of categories such as single boots (ie: Scarpa Charmoz, La Sportiva Trango Tech), warm / insulated double boots (ie: Scarpa Phantom 8000, La Sportiva G2 SM) and the very expensive (and light) ski mountaineering boots that are primarily used by ski-tourers (ie: Dynafit, Scarpa F1). All crampons have a series of ratings (ie: B1, B2, B3 etc) denoted as the crampon rating and they can be matched up with boots of similar ratings denoted as the boot rating. A B1 crampon can be used on a B3 boot for example and will work well because the B3 boot is stiffer than the B1 boot. It is nearly impossible to find a B3 crampon to pair up with a B1 boot for example, that would work well for someone climbing on steep terrain. I can attest to this from my numerous shopping forays for crampons in the various Mountaineering shops in the hubs around the world such as Zermatt, and Chamonix as well as in the US in places such as, Bishop and Boulder. I bring this up because many a climber has bought a very expensive pair of mountaineering boots for a single trip and found out that they cannot afford to use them for the many subsequent years as the boot is not cost effective per use. The specialty shops in the above locations, however, typically have rental boots of high quality as well as very reasonably priced and that would be the place to look for rentals for a single trip rather than buying a very expensive pair of boots that would probably be ill used by the time you had figured out how to use them properly.

What I would buy now

For the serious traveler who plans to go climbing every now and then during the three seasons the Scarpa Charmoz or the La Sportiva Trango Tech boots are the right choice for alpine climbing and mountaineering in the Alps, Cascades and other similar mountain ranges around the world. For the high altitude climbs above 5,500m where warmth is a big issue the double boots like the Scarpa Phantom 6000 or the La Sportiva G2 SM are the best bet. And for the mountain climbers that are also ski mountaineers the lighter boot for ski-touring, like the ski mountaineering boots from Dynafit, or from other brands like, for example, Scarpa F1.

What to take from this for your next trip

Write down on the trail (or after the trip) a record of the gear you used and how it worked. Six months later you won’t remember the good from the bad. This type of trip is a one-time affair for most people and they go back again and again. It is only the people who allow the curve of improvement to dictate their increase in ability that end up completing routes. If you are planning your first serious long distance hike, don’t invest in all of the specialty gear before you go on a shorter trip on a trail that you are familiar with. You will find that the gear that works for you is the gear that works for your body and your hiking style. That is something that you learn on the trail, not from reading on the internet.