Altra - Mont Blanc Carbon
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Reddit Reviews:
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Based on 1 year's data from Feb 24, 2026 How it works
Liked most:
8
0
"for 90% of trails, runners are too comfortable and light to not wear."
"The EGO Max foam they're using in the midsole is unbelievable. ... Incredibly comfortable with an extremely lively response."
"Altras are the most comfortable by far. ... my altra trail runners and road shoes are the most comfortable shoes for my feet I’ve ever worn."
3
1
"The MB Carbons are fantastic for 50k to 100M."
"super versatile is the Altra Mont Blanc Carbon … can do it all ... I run east coast terrain and 100k ultras in them."
"I have done many ultras in the Mont Blanc Carbon and never any issues"
9
0
"The EGO Max foam they're using in the midsole is unbelievable. ... Incredibly comfortable with an extremely lively response."
"until another company comes out with a wide toe box and no arch support trail runner it’s altra all the way for me. ... I had to immediately return them due to their pronounced arch support. My feet hated them"
"Altra makes trail runners with a wide toe box."
7
3
"The frequency of my ankle rolling went way down. ... I have been wearing altras as everyday wear for almost 3 years and have maybe rolled my ankles 3 times over that time frame."
"keep a pair of altra zero drop for an occasional form check ... I'll run like a 5k in them to regain more nuanced feel in my form to check myself on making sure my stride length and strike points stay where I want."
"Lone peaks have zero drop, which means when you land on your foot you should be landing more towards the balls of your feet and with your feet below your center of mass. ... This is a more natural running form."
6
2
"Feel incredibly confident in them bombing downhills and even technical terrain."
"The slim and grippy sole makes them extremely safe in scree and rocky terrain."
"Gone through s lot of scree with them."
Disliked most:
2
4
"they begin to fall apart after 200 miles. ... these shoes often don't last a year at the rate I use them. ... I put in a warranty claim regularly because these shoes often don't last a year at the rate I use them."
"Altras are good, but I destroy them in about 300 miles. ... Though Altras kind of suck for durability (expect 300 miles unless they fixed things)."
"Altras are good, but I destroy them in about 300 miles. ... Though Altras kind of suck for durability (expect 300 miles unless they fixed things)."
1
1
"the upper was uncomfortable and had a lot of give. ... On the downhills my feet were definitely shifting forward despite using a runners knot."
"the upper was uncomfortable and had a lot of give. ... On the downhills my feet were definitely shifting forward despite using a runners knot."
3
3
"the change was very noticeable on trail running. ... Calf and Achilles soreness galore."
"Go with Altras if you dont mind your achilles blowing up ... zero drop shoes work for some ppl for sure but they have blown up far more achilles than theyve helped ppl. Myself included."
"Go with Altras if you dont mind your achilles blowing up ... zero drop shoes work for some ppl for sure but they have blown up far more achilles than theyve helped ppl. The barefoot running crazy that stemmed from Born To Run got many of us. Myself included."
1
1
"There was a lot of rain on Day 1, and my shoes were so wet that I they were still damp when I started on Day 2."
"There was a lot of rain on Day 1, and my shoes were so wet that I they were still damp when I started on Day 2."
carter 1.0I've run a 100 in LPs before but I switched to Timps for longer stuff and haven't looked back. They're awesome shoes and I think they're a happy balance between the ground feel of the LPs and not being too mushy. At the time I switched, I was also grateful for Vibram soles (before the 9+ came out). I've also raced in the Mont Blanc Carbons but I found the upper was uncomfortable and had a lot of give. On the downhills my feet were definitely shifting forward despite using a runners knot. I don't have this problem with Timps and I also really like the Timp BOAs. They are super comfy and it's so nice to not have to worry about shoes coming untied and being able to easily tighten or loosen them. My only fear in a 100 is that something breaks and I'm not able to tighten a shoe and it's a long ways to a drop back with another pair.
Desperate_Wallaby966 1.0Altra Mont Blanc Carbon
mw_19 1.0I like the Altra Mont Blanc Carbon, which is a custom (more flexible) carbon plate and offers some protection, underrated benefit! The MB Carbons are fantastic for 50k to 100M.
I don’t really notice difference and jump between zero drop and some drop 4-6mm weekly. I will say the zero drop Altra Mont Blanc Carbon works extremely well for me. They just came out with a non carbon plate version for less money, I want to try. It fits great no sloppiness , their best responsive foams, light and stable. Feel incredibly confident in them bombing downhills and even technical terrain.
Sleeper shoe that is super versatile is the Altra Mont Blanc Carbon … can do it all and it’s a much snugger fit then most altras and durable … I run east coast terrain and 100k ultras in them. They have a new Mont Blanc Speed without carbon that’s a bit softer but not as propulsive…
The new on cloud ultra for training and then the pro for races … that’s probably going to be real nice… Personally I train a lot on paved paths so I wear Puma MagMax these days to protect my legs … and for trails I love love the Altra Mont Blanc Carbon because they are agile and drain well. I have done many ultras in the Mont Blanc Carbon and never any issues , I think zero drop on trail shoes is not as of a big deal…
TheAmerican_Atheist 1.0I love my Altra Olympus 275 and the Altra Mont Blancs. The Olympus’s are heavier but great. The Mont Blanc are awesome.
Ive been running Altra Lone Peaks for years. I bought Altra Olympus 275 and Altra Carbon Mont Bloc. Those two shoes are game changers. The 275s are awesome. The Mont Blocs are noticeably lighter than the 275. But the 275 just feel perfect
Twizad 1.0The Mont Blanc’s are the “Standard” width while Lone Peak’s are “Original”. So slightly narrower but still wider than most.
Zealousideal_Map5420 1.0Similar story having out used many pairs of the OG Xudos. I have been wearing Altra Mont Blanc Carbons but they really didn't cut it on my last mountain ultra and whilst I can tolerate zero drop I would prefer a drop. I have tried so many. I am currently waiting for the Altra Olympus with a matrix upper that come out next month and the new Xudos with vibram but I don't hold out much hope they will be any wider. Inov8 in wide is the widest shoe I have found but the foam just felt weird to me.
yetiblue1 0.6You’d be hard pressed to find another shoe that is faster and as wide. Best suggestion would be to get the FKT insoles from Topo for a bit more energy return and get faster ™️ Or potentially the Altra Mont Blanc speed/carbon. They’re pricy though and potentially not enough volume. They do run faster than anything Topo has atm
The_hat_man74 0.3I’ve run on peregrines quite a lot. I like them for short and speedier trail runs. That said I find myself setting up runs to be able to be in my xodus ultra 3s. I also run in Altra Mont Blancs, but if I could I’d always be in my xodus ultra 3s. They’re the shoes I’m lacing up for Leadville in a couple weeks.
Z_Clipped 0.3I did the JMT last year in a pair of Altra Mont Blancs and I still run in them every day. I think they're the best pair of running shoes I've ever worn. The EGO Max foam they're using in the midsole is unbelievable. Incredibly comfortable with an extremely lively response.
dirtypins 0.0I personally wear non-waterproof Altra trail runners for hiking in the snow, with a pair of Kahtoola micro spikes for icy conditions. It’s been ages since I’ve been on to San Jacinto, so I can’t advise on that specifically.
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