• Discontinued
  • 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: 8oz
    Women: 7oz
  • Heel to toe drop
    Men: 6mm
    Women: 6mm

    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: 24mm
    Women: 24mm
  • Forefoot height
    Men: 18mm
    Women: 18mm
  • Width
    Men: Standard
    Women: Standard
  • Release date
  • Special editions
Show more facts


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.

85 / 100 based on 10 expert reviews

  • 87 / 100 | Get Out There Gear

    Merrell's All Out Crush performs very well and cleans up easily.

  • 90 / 100 | Obstacle Racing Media

    Great OCR shoe.

  • 80 / 100 | Running Competitor

    It features a lightweight TPU-film-reinforced upper with drainage holes for water displacement, plus an aggressive multi-direction lugged outsole made from a super grippy rubber compound.

  • 89 / 100 | Running Warehouse

    Add the 6mm offset to the flexible sole and soft foam, and you’ve got a very well-balanced, smooth-riding, do-almost-anything, light weight trail shoe.

Show moreless reviews
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Updates to Merrell All Out Crush

  • The upper of the Merrel All Out Crush has a bulky airy mesh but is very cool because there is no barrier that will stop the air from cooling the foot. On wet and muddy grounds, the upper is wet but will tend to dry up quickly as the water is pushed out easily from the shoe with a draining system of two draining holes on both sides.
  • The upper is enhanced with a TPU cage pattern, a new innovation for shoes, which makes the shoe more durable and very easy to clean after tracking down the mud. Synthetic overlays are also added to the construction of the upper, and it comes with soft gusseted tongue and flat laces that hold the foot tightly and securely.
  • Merrel uses the Uni Fly midsole and plate for just a minimal amount of cushioning and for stability. There are two drainage holes on each side of the shoe as well for quick drying purposes.
  • The outsole has the Merrel Select Grip rubber sole with 5mm lugs. This design is for optimal efficiency on any obstacles, especially for the tough mudder competition.

Merrell All Out Crush size and fit

The All Out Crush offers a new sock like fit in its upper. The toe box area has a snug fit on its nice shape and volume. The mid-foot is also made more secure with the upper construction combining the open air mesh and synthetic overlays, and the heel area is snug without slippage for a more confident ride on trails. This shoe is available in standard running shoe width and length.


The outsole of the All Out Crush features the M-Select Grip outsole, a Merrel exclusive rubber outsole. It has lugs in 5mm designed in a great pattern for better traction and grip and for versatility. The rubber compound is soft and flexible, with flex cutouts in the forefoot area, while the lugs are solid. This outsole material is also used in the Merrell All Out Crush 2.


The midsole of this Merrell running shoe is made from integrated EVA foot bed for its cushioning and the TrailProtect pad on the sole for added protection.


The upper of this shoe is made from the mesh materials with TPU synthetic overlays. A protective toe cap is also placed for added protection. These materials made the shoe cool and breathable, more durable, and easy to wash and dry up.