• Terrain


    Shoes best for road, track and light gravel. See the best road shoes.


    Shoes best for trail, off road, mountains and other unstable surfaces. See the best trail shoes.

    Good to know

    As long as you stick to the road or path, and if you want just one running shoe, buy a road running shoe.

  • Arch support

    Neutral / cushion / high arch

    Shoes for runners who do not need any additional arch support (Around 50% of runners). Best for people with normal, high or medium high arches. See the best neutral shoes.

    Stability / overpronation / normal arch

    Shoes for runners who need mild to moderate arch support (Around 45% of runners). Best for runners with a low arch. See the best stability shoes.

    Motion control / severe overpronation / flat feet

    Shoes for runners who needs a lot of arch support. Best for runners with flat feet. See the best motion control shoes.

    Good to know

    - Rule of thumb: If in doubt, buy neutral shoes to avoid injuries.
    - More about arch support in this video.
    - Find your arch type by following steps from this video.

  • Use

    Daily running

    Cushioned shoes for your daily easy running. Great comfort. See best shoes for daily running.


    Lightweight shoes good for races, interval training, tempo runs and fartlek. Here are the best competition running shoes.

    Good to know

    If you want just one pair of shoes, buy a shoe for daily running.

  • Price
  • Weight
    Men: 7.8oz
    Women: 6.2oz
  • Heel to toe drop
    Men: 0mm
    Women: 0mm

    The height difference from the heel to the forefoot, also known as heel drop, toe spring, heel to toe spring or simply drop.

    There are many opinions about what a good heel drop is. We do not recommend any in particular. Lean more in this video.

  • Heel height
    Men: 8mm
    Women: 8mm
  • Forefoot height
    Men: 8mm
    Women: 8mm
  • Width
    Men: normal
    Women: normal
  • Release date
    Nov 2015
Show more facts


We spent 9.1 hours reading reviews from experts and users. In summary, this is what runners think:

9 reasons to buy

  • Most of the reviewers exclaimed that the Vibram FiveFingers Trek Ascent Insulated is easily the most comfortable shoes they have ever worn in winter.
  • The testers agreed that the wool-lined upper unit was able to provide warmth during the cold seasons.
  • A large number of users considered the price as truly reasonable.
  • The shoe is easy to wash, commented several runners.
  • The outsole’s tread gained positive feedback for being efficient on dry and wet surfaces.
  • Some runners have used it on the trail and on the road.
  • There are enough ground feel and adequate protection, according to more than a handful of users.
  • Several consumers lauded the lightweight nature of this running shoe.
  • Runners observed that the Vibram FiveFingers Trek Ascent Insulated was flexible enough to accommodate natural foot-movement.

4 reasons not to buy

  • A significant number of runners had a hard time getting the right fit and sizing. Vibram advises going one size up in this shoe.
  • Some runners pointed that a heel loop would have made shoe entry and exit substantially easier.
  • A few complaints were made about how difficult the shoe was to dry once it got wet.
  • The water-resistant upper barely shielded the shoe from water, according to a handful of reviewers.

Bottom line

Vibram FiveFingers created a winter version of the massively popular Trek Ascent line in the wool-insulated model. The more aggressive and ultra-sticky outsole makes running on icy and wet conditions a breeze. Provided that runners don’t run on puddles or tackle more than 1 inch of snow, their feet should feel the comforting warmth of the wool collar and sockliner. It delivers a rightful blend of great traction and superior comfort that barefoot runners can hardly find in today’s market.


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.

Are you an expert? Apply to contribute here.

86 / 100 based on 5 expert reviews

  • 92 / 100 | Jon Zinck

    This is one of the most comfortable shoes I have ever worn in my life. And this is hands down their best shoe in my opinion.

  • 80 / 100 | Matty Tripps

    For the most part, you can take this out really cold weather, so long as you're not walking through snow and it's not less than 15°F, you'll be fine.

  • 88 / 100 | Feetus Born To Run

    You're either going to love the look or hate it. We fall in to the latter category. The Trek Ascent Insulated has a lot of character; the sole is incredible, and the choice of materials for the upper and inner will ensure your feet will stay toasty.

  • 84 / 100 | Birthday Shoes

    If you want a minimalist shoe for the winter and are not expecting to encounter deep snow, this is the running toe shoe for you.

Show moreless reviews
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Updates to Vibram FiveFingers Trek Ascent Insulated

  • One of the biggest differences in the FiveFingers Trek Ascent Insulated over its standard model is the use of the Ice Trek rubber compound, which is tailor-made for running in wet, icy conditions.
  • Because the insulated model is built for the cold months, the shoe is also lined with wool in the collar, the interior, and the sockliner. The wool works as intended as it keeps the foot warm as long as the foot does not get wet in the first place.
  • To prevent the foot from getting wet, Vibram added a water-repellent upper. Although this is far from being fully waterproof, the water-resistant properties should be able to make runs very comfortable during wintry conditions.
  • The slight padding in the collar and the tongue makes the shoe more comfortable than the regular model. Plus, it also adds to the warmth in winter.

Vibram FiveFingers Trek Ascent Insulated size and fit

Vibram confirms that the Trek Ascent Insulated runs at least a size smaller than the usual fit in most Vibram shoes. Still, it would be a very good idea if runners can try on the shoe as it would significantly help in getting a more comfortable run. The fit is snug in a good way with plenty of toe box room. As always, the toe slots accommodate all five toes for a natural splay.


One of Vibram’s premium outsole technology, the Ice Trek, is used in the underfoot of the Trek Ascent Insulated. The rubber compound is a beast in wintry conditions, particularly on the trails. It has a very aggressive lug design that will raise the confidence of users while running, walking, or hiking. There are also “flex grooves” between the lugs that add flexibility to the shoe. The 4mm outsole provides decent protection and ground feedback at the same time.


Handling “midsole” duties is the 4mm PU and wool sockliner. It gives added protection and a little cushioning in the Vibram Trek Ascent Insulated.


The upper of the Trek Ascent Insulated is one of the most innovative in Vibram’s line. It features a high-tenacity nylon and polyester for a durable, water-resistant, and glove-like fit. As the collar and the interior have wool, the shoe keeps the foot deliciously warm during winter. The fit is snug and really feels like a second skin. A traditional lace-up closure keeps the fit tight and secured throughout the run.