Arch support
M: 198g | W: 170g
Heel to toe drop
M: 6mm | W: 6mm
Heel height
M: 24mm | W: 24mm
Forefoot height
M: 18mm | W: 18mm
Widths available
M: Normal - D | W: Normal - B
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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.

Neutral / cushion / high arch

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

Stability / overpronation / normal arch

Shoes for runners who needs arch support (Around 45% of runners). Best for runners with a normal arch. See the best stability shoes.

Motion control / severe overproanation / 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.

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.

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.


We spent 9 hours reading reviews from experts and users. In summary, this is what runners think:

5 reasons to buy

  • Many runners liked the lightweight built of the All Out Crush Light.

  • It is a reasonably priced shoe.

  • Some testers took note that this shoe is very comfortable.

  • Delivers reliable traction while running on trail, based on some comments.

  • True to size.

2 reasons not to buy

  • The sole of the All Out Crush Light wears out quickly as mentioned in some reviews.

  • Some noticed that cushioning is not a priority in this shoe.

Bottom line

The Merrell All Out Crush Light is a lightweight trail running shoe designed with durable traction. With its moderate level of cushioning, this shoe is only ideal for light trail. It does not provide the right protection for technical terrains and long distance runs.

World wide, All Out Crush Light is in the bottom 50% most popular running shoes. The brand, Merrell, is the 12th most popular.

Map: Shows popularity per continent based on 1010 shoes


4.6 / 5 based on 359 ratings

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Expert reviews

Experts are running shoe geeks, 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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86 / 100 based on 1 expert reviews

  • 86
    RunsselLevel 1 expert
    by Runssel Blogspot Com
    218 grams is not much for a shoe with such characters.
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These are visual presentations, not reviews

  • Webtogs
    Designed to take on even the most gnarly of trails, the All Out Crush Light men's running shoes feature a protective toe cap, a TrailProtect Pad for undefoot protection, and an M-Select Grip tuned outsole with a 7 mm drop and a 5 mm lug depth.
  • Nelly Shop Zappos
    Down at the bottom, there's an M-Select Grip outsole that delivers slip resistant traction on wet and dry terrain.
  • Richard Shop Zappos
    These trail running shoes are extremely lightweight. You have a 100% vegan-friendly construction with a breathable mesh and polyurethane upper.
  • TV Walk Tall

Updates to All Out Crush Light

Being the newest addition to Merrell’s off-road shoes, the All Out Crush Light features a breathable upper, which is made from woven fabric and TPU materials, make a great exterior. As enhanced with the TPU synthetic materials, this shoe is more durable and easy to clean and dry. The elasticity of the upper also adds a very distinct touch to trail running experience. A toe cap protection is also added in the upper design.

The midsole of this shoe are composed of the Uni Fly, an integrated EVA foot bed made of ultra-resilient foam, and TrailProtect pad, underfoot guard that protects the foot from sharp objects. Both of these are for comfort and protection on tough terrains, especially on off-road trails. This provides great impact absorption while keeping it soft on landing, thus foot is empowered for a great take off.

For its outsole, the M-Select Grip is used, which is a compound of soft rubber with tear-resistant property. It has a self-cleaning set of lugs placed around edge, providing lateral movement. It also provides reliable grip on wet or dry weather.

All Out Crush Light size and fit

The All Out Crush Light comes true to size. Its upper materials are not just for a smart appeal, but for a comfortable fitting as well. The toe area is just at the right width, as well as the mid-foot area so that the foot can move well as it spread out along the stride.


The outsole has the M-Select Grip Merrell technology. This is a rubber compound for abrasion resistance and non-slip purposes. The 5mm lug offers excellent grip and great traction on mud without slipping even on wet grounds.



The midsole are made from soft and comfortable Uni-Fly foam cushioning and TrailProtect pad. These technologies make the shoe more protective and softer with a better ground feel on trails. The impact is properly dispersed and the aggressiveness is heightened for faster and longer performance.


The upper comes with a new design of the combined breathable mesh and TPU synthetic materials. It offers not just the breathability, but the elasticity, durability, and comfort. Merrell also used the traditional lace closure system, but enhanced the toe area with the Toe Protect cap, thus adding protection against sharp objects on tough terrains.


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