We spent 6.9 hours reading reviews from experts and users. In summary, this is what runners think:

7 reasons to buy

  • The upper unit of this running shoe is made out of mesh and TPU, with reflective detailing that improves visibility in low light conditions.
  • Many runners welcomed the synthetic leather laces and the option to have the insole removed.
  • The TrailProtect ™ pad gives reliable underfoot protection from debris along the trails.
  • The Vibram brand of outsole makes use of high-performance materials to make up a very durable outer layer.
  • Reviewers appreciated the M Select Dry, the moisture wicking capability of the upper unit.
  • The All Out Terra Ice doesn’t use any animal products, making it a great choice for vegan athletes.
  • Though aggressive when it comes to its looks, it’s still very appealing to the eyes.

4 reasons not to buy

  • There were testers who complained that the outsole wasn’t as durable as it was supposed.
  • The mid-sole tended to break down easily for some reviewers.
  • The All Out Terra Ice is a pretty heavy running shoe.
  • It has a very expensive price.

Bottom line

The Merrell All Out Terra Ice gained mixed reviews from the users. Many were satisfied by the shoe's overall performance but others were disappointed because it is heavy and not durable. Despite the mixed reviews, many athletes went to the All Out Terra Ice from Merrell for underfoot comfort and protection against the trails. It’s a heavy, but effective running shoe that’s great for neutral runners.


Terrain: Trail
Arch support: Neutral
Weight: Men: 12.7oz | Women: 11.2oz
Heel to toe drop: Men: 6mm | Women: 6mm
Pronation: Neutral Pronation
Arch type: High arch
Use: Jogging
Waterproofing: Waterproof
Strike Pattern: Midfoot strike
Distance: Daily running | Long distance | Marathon
Heel height: Men: 24mm | Women: 22mm
Forefoot height: Men: 18mm | Women: 16mm
Brand: Merrell
Type: Heavy | Big guy | Low drop
Width: Men: Normal | Women: Normal
Price: $180
Colorways: Black, Blue, Grey
Small True to size Large
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Expert Reviews

Experts are runners, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

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82 / 100 based on 7 expert reviews

  • 85 / 100 | Get Out There Gear | Level 2 expert

    As far as snow goes, this is where the shoe really excels. When I was running uphill, downhill and cross on snow and ice, there was no problem. I felt good bite and never slipped once.

  • 84 / 100 | Canadian Running Magazine | Level 5 expert

    The waterproof upper has a minimal, sleek design and that signature Merrell fit, which will appeal to runners who like a roomy and flexible forefoot.

  • 80 / 100 | Heavy | | Level 4 expert

    Conquer icy surface with ease thanks to built-in tungsten carbide spikes with a carbon toe for superior grip on slippery surfaces.

  • 86 / 100 | GearJunkie | | Level 3 expert

    Unless you are plowing through ankle-deep snow, the All Out Terra Ice is a hearty shoe for winter training.

  • 85 / 100 | Outside Online | Level 3 expert

    A winter warrior that will rescue much of your cold-weather running.

  • 80 / 100 | GearJunkie | | Level 3 expert

    Merrell’s All Out Terra Ice is a sturdy winter runner that shines on verglassed road and trails. The synthetic outer repels the elements and the sturdy front rand protects the digits from hidden toe bashers lurking beneath the white stuff.

Become an expert

  • Merrell’s popular All Out Terra line brings 9 carbide spikes in the outsole to make running on ice such a treat in the Terra Ice. By adding these tungsten-made spikes, the highly-sought performance of the All Terra in the outdoors becomes even more so during winter season.
  • More than just the spikes, the outsole is fitted with very aggressive 6mm rubber lugs for the ultimate outdoor grip on wet rocks, technical trail, gravel, and even mud.
  • The new inner sock, just like the one found in the trail version, offers exceptional wraparound feel and enhanced foot security. Piling on the miles in winter is more comfortable with the interior plush feel that is enhanced by this cozy inner sock.
  • As cushioning is enhanced in the All Out series, which is quite evident in the All Out Terra Ice, most runners will still feel decent flexibility and adequate close to the ground experience for better feedback.

The All Out Terra Ice delivers Merrell’s signature close fit in the heel and midfoot with a roomy toe box. With the kind of secured feel in the right areas, runners who love speed should be more confident in their strides. On the other hand, the roomy toe box caters to the need of different runners and provides a very plush room for the toes to splay. Available widths are D for the men’s and B for the women’s. Sizes are on the money with the All Out Terra Ice. Options can be 6 to 14 for the men’s and 5 to 11 for the women’s.

Merrell incorporates the spectacular aggressiveness of 6mm lugs and the stickiness of the Vibram outsole for an incredible grip on different surfaces. As if that were not enough, 9 carbide spikes are also located underfoot to make the Terra Ice a serious operator in icy or snowy conditions.

A Trail Protect Pad is located just above the outsole for a little cushioning and enhanced underfoot protection.

The upper of the All Out Terra is made of synthetic mesh for great breathability and TPU overlays for better structure and support. Merrell also uses a waterproofing membrane below the mesh upper to fight off water or snow. An M-Select Dry Membrane keeps the interior dry as it wicks away moisture. Since there is a chance that the runner faces low-visibility conditions during winter, the reflective materials will be very handy. The removable footbed adds step-in comfort and secure feel and can also be replaced with customized orthotics.


Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.