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La Sportiva Mutant Running Shoe - Men's

Sale $107.96 - $134.95

Item # LSP005P

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Item # LSP005P

Tread heavy.

From fast, rolling singletrack to technical, rock-strewn climbs, the La Sportiva Men's Mutant Running Shoes handle it all. These aggressive, neutral trail running shoes provide a generous amount of cushioning for those longer runs, and they're fitted with TPU stabilizers to enhance the feeling of security when the trails get slick. The Airmesh uppers ensure a high level of breathability, while Spyraltongue technology allows you to dial in the perfect fit every time you head out for a run. Dynamic scree guards keep annoying hitchhikers out of your socks, and four-way stretch material won't interfere with the overall fit of the shoe. La Sportiva went with its stickiest sole on this shoe, resulting in even more traction, and then it opposed the lugs to enhance breaking ability, meaning these puppies climb like a billy goat and stop like a fox. 

  • Airmesh upper with TPU overlays
  • Four-way stretch dynamic scree guard
  • Tempo 2 Ergo last
  • Airmesh lining
  • Spyraltongue technology
  • Injection molded EVA midsole with TPU stabilizer
  • Fusiongate lacing harness
  • 32A midsole
  • Frixion sole with V-Groove and Impact Brake System
  • Toe bumper

Tech Specs

Upper Material:
AirMesh, TPU, 4-way stretch dynamic scree guard
Spyraltongue, lace
Injection Molded EVA, TPU Stabilizer
FriXion XF, Impact Brake System V-Groove
Tempo 2
Heel / Forefoot Height:
(heel) 26 mm, (toe) 16 mm
10 mm
Claimed Weight:
9.52 oz
Recommended Use:
trail running
Manufacturer Warranty:
1 year

Size chart

La Sportiva

4 35.5 5  
4.5 36 5.5  
4.5+ 36.5 5.5+  
5 37 6  
5.5 37.5 6.5  
6 38 7  
6.5 38.5 7.5 24
6.5+ 39 7.5+  
7 39.5 8 24.5
7.5 40 8.5 25
8 40.5 9 25.5
8.5 41 9.5 26
8.5+ 41.5 9.5+  
9 42 10 26.5
9.5 42.5 10.5 27
10 43 11 27.5
10.5 43.5 11.5 28
10.5+ 44 11.5+  
11 44.5 12 28.5
11.5 45   29
12 45.5   29.5
12.5 46   30
12.5+ 46.5   
13 47   30.5
13.5 47.5   31
Note: La Sportiva shoes are built on European half sizes which are smaller increments than US half sizes. This gives us four extra sizes per size run which gives you a better fit!

Reviews & Community


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best trail runner in the universe

  • Familiarity: I've put it through the wringer
  • Fit: Runs small
  • Size Bought: 45

LOVE. 2nd pair and I don't care, they're not going anywhere (I hope). I would be sad if they discontinued this shoe because it is so great. Less of a rock plate than the bushido, but has more feel. The tread is super grippy but hard enough to hold up, I scramble the flatirons in them often. It sketches me out to scramble in the Salomon speedcross 3 cuz of the soft tread, these are very different. Good width in the toebox I have a pretty wide foot.

best trail runner in the universe

Great Shoe for my foot

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: 44.0

It took a couple of runs for the shoe to break in and for my foot to get used to it. Now, after 200+ miles, I love it. I have flat feet, wide fore-feet, narrow heels, and multiple skier bone-spurs.

The sole is stiff, nearly like a hiking boot; this is a plus for me. I have weak, skinny ankles, and the stiff sole to support my feet and ankles wonderfully. I also have weird, narrow heels, and I have not gotten heel blisters from these guys. After long runs, 12+ miles, I have gotten toe blisters, but thats also been the case with every other shoe I have worn.

I like the lacing system and overlap system; my only complaint is that it doesn't go down quite low enough over the forefoot.

For as burly as it is, I find it lighter than my UltraRaptors.

Great shoe, and I imagine that is partly because I have a weird foot and they fit me.

Not for me

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small

I've been running for as long as I can remember and these are the worse shoes I've had. I've done a lot of minimalist and barefoot running for the past decade and wanted to try a more durable shoe so I had these and the Salomon speedcross 3.

The mutants felt like they had a significant higher drop than the speed cross and I felt like I couldn't get my heel out of the way even though these have the same drop. I didn't have the same problem with the Salomons.

The rubber was significantly sticker than other trail shoes I've used and bounds better than the speedcross.

They did a great job of protecting my feet.

I took them out on a 10 miler and ended up with the worse knee pain that ive had in a long time and the first blister I've had in years. That's more than likely due to how it changed my running style more than a defect with the shoe itself. If you are used to forefoot striking or minimalist running shoes I wouldn't look to closely at these.

They got wet at the end of my run on a stream crossing and took about two days to dry out. They did drain very quickly immediately following the crossing.

And finally the stitching was coming apart after 15 miles as well.

I normally wear a 11.5 and got a 12 in these and they were a great fit.

Thanks for the review Ryan. Super helpful to get this feedback out to the community.

I wish I was lucky as everyone else

    It seems like no one has had stitching issues like I have on here, which has got me wondering if I got a bad apple. The stitching as can be seen is completely coming undone after a 13 miler peak out on mount Evans this am. My feet felt cozy as they do in most wide toe box trail runners and no blisters is a bonus. The material is light but I had excellent rock protection from the sole plate/rock guard. I also felt like I had ample toe protection from toe kick. Other than that these like many have said are a great trail runner and can be used for fast packing and hiking on all terrains with aggressive tread on the outsoles. Like I said above, the stitching is coming out on the top inside borders of the shoes. Other than that solid shoe. Let's hope for a good 1x1 exchange and a more positive experience in the future.

    Not for high arches

    • Familiarity: I've put it through the wringer
    • Fit: Runs small
    • Size Bought: 9.5

    If you have high arches these will crush your instep.

    I had to return them - the rubber also seemed very hard, which may wear out over time, but out of the box this shoe was pretty stiff.

    The overlapping "sock" inner is a little odd for a trail running shoes - (works great in their climbing shoes) - but as I strided the overlap began to bunch up.

    My Best ones!

      I love how they fit how light they are and traction as always is great! Just ordered my second pair.

      Ed, thanks for the post! Glad to hear the Mutant are working out for you. Do you have any trail races planned for the summer? Reach out to me if you ever have any running gear questions --

      Expert Gearhead

      Great Hiking and Mountain Shoes

      • Familiarity: I've put it through the wringer
      • Fit: True to size
      • Size Bought: 9.5 (US)

      First the things that make this shoe awesome:

      The fit on the upper of these trail running shoes is excellent. Second only to Salomon shoes in terms of comfortably keeping your feet totally locked down. This makes it easy to run up and down steep or rough terrain without worrying about your foot moving around in the shoe which can cause blisters or twisted ankles.

      The sole of these shoes is the stickiest of any trail running shoe I have tried. The sticky rubber La Sportiva puts on these is seriously awesome and the tread pattern mirrors those on my moutineering boots. Unsurprisingly, these shoes have unbelievable traction on mud, scree, and wet smooth rock.

      The things that make this shoe not so awsome:

      The break in time of these shoes was surprisingly long. For the first ~75 miles of use after about three hours there was an uncomfortable pressure on the balls of my feet.

      These shoes absorb a lot of water when they get wet (which makes they heavy) and take an annoyingly long time to dry.

      The laces are not as durable as the rest of the shoe. I have had a couple pairs of laces wear out and break by the top rungs of the shoe due to the friction between the fabric lace holders and laces. Breaking a lace in the middle of a several day long hike is pretty annoying.

      These shoes have a fairly high platform due in to a reasonable amount of cushioning and the deep lugs which I find not ideal for fast running around turns.

      Despite their flaws these are my go-to shoes for mountaineering approaches, and mountain running in steep places like Alaska and New Zealand.

      Gregory, thanks for your awesome review of the Mutant! Glad to hear these have worked out for you so far. I'd have to say I'm pretty envious of your trail running trips to NZ. Do you have any trail running plans for the summer? Reach out to me any time to talk running gear or endless singletrack trails!

      Expert Gearhead

      Kept my feet happy on the JMT

      • Familiarity: I've put it through the wringer
      • Fit: True to size
      • Size Bought: 43.5

      Balled out with these bad boys for 215 miles. If you're thinking about the Mutants for a thru hike, do it. I put in about 17-22 miles a day, and they were comfortable the entire way. I had no foot pain and essentially zero blisters for the entire trip.

      -DANK colors
      -Effective lacing system
      -Great sticky rubber
      -Effective tread pattern
      -Sufficient support/no problem cruising through talus
      -Unique (not a huge deal, but seeing Cascadia 10s everywhere gets boring)
      -Consistent with La Sportiva sizing

      -The stickier Frixion Green rubber doesn't last quite as long as the Blue (hard to call this a con--ought to be expected)

      Matt, thanks for your great review of the Mutant! Happy to hear they worked out for you on the JMT. I actually guided that trail about a year ago! I hope to go back soon. Do you have any big treks planned for this summer? Reach out to me with any backpacking gear questions directly, or to just talk about endless singletrack goodness ---

      Expert Gearhead

      What's the sizing of this shoe comparing to the La Sportiva Bushido?? I use size 12 US for the Bushido and runs perfect. Thank you!

      I can't speak for the Bushido but I can for the Anakonda, quantom, electron, wildcat, helios shoes and the Karakoram and Spantik boots. I wear all of them in the same size 43.5.

      La Sportiva fits pretty much the same across the board!

      I love this shoe, the cushioned version of the Anakonda

      A great all terrain lightweight hiker

      • Familiarity: I've put it through the wringer
      • Fit: Runs small
      • Size Bought: 47

      I've been wearing the Mutants for a few months now and have really grown fond of them. I had been wearing the Crossover 2.0 GTX all winter, and was excited this Spring when I saw how much they had in common with the Mutant.

      The Spyraltongue hugs the midfoot for a very secure and comfortable hold in the upper. The heel is perfectly narrow for my foot, and I have no slippage in that area at all. The toebox is a little wider than the Ultra Raptor, in line with the Wildcat 3.0, which is a very good thing in my eyes. The only slight knock on the upper is the material, which is very comfortable and durable, but not the most breathable or fast-drying. I wear a size 12.5 in almost all shoes, but a 13(47) in all La Sportiva. This shoe fits true to size.

      The midsole is plush yet very responsive. I've worn this shoe on a number of long hikes with a max distance of 22 miles miles and 7,200 feet of elevation gained. There is a plastic stabilizer in the heel area which offers a nice amount of stability, without getting in the way. One slight knock here is the absence of a rockplate or forefoot protection. The cushion is adequate for most trails and trail conditions, but I tend to feel a little bruising on the really rocky stuff.

      My favorite part of this shoe is the outsole. It is the same pattern as the Crossover 2.0, but swaps the harder Fixion Blue for the softer and stickier Frixion Green. This is the same rubber compound used on the Ultra Raptor. I've had nothing but very positive experiences with this outsole. It has handled sand, hardpack, mud, talus, and just about everything else I've thrown at it.

      A very nice shoe for those looking for a lightweight trailrunner, with excellent traction, great durability, a touch of stability and protection, and great looks.

      A great all terrain lightweight hiker

      Prefect blend

      • Familiarity: I've used it several times
      • Fit: True to size
      • Size Bought: 10.5

      I log a lot of miles, almost all of them on trails and have tried out a lot of different shoes in my day. I just got a pair of Mutants and have been really impressed by the fit, support, and cushioning. I know all feet are different, but with it's wrap-around upper, the Mutants really fit my bony feet like a sock - no movement or hot spots whatsoever. It feels light on the foot and is super nimble on technical terrain. The Frixion La Sportiva soles really excel on muddy or slippery trails. No determination on durability as yet, but I've always been impressed with La Sportiva's longevity. I still use my first pair of Raptors as approach shoes after 400 miles on the trail. It's certainly worth trying some on when you get the chance.

      Agreed - just picked up a pair. Best fit and technical terrain performance since the original Crosslites (still have a few fresh pairs of those stashed away in the back of the closet) - instant classic! Happy to see a new design compatible with hobnails for winter running on ice and snow.