• 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
    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: 9.1oz
    Women: 7.7oz
  • Heel to toe drop
    Heel to toe drop
    Men: 10mm
    Women: 10mm

    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
    Heel height
    Men: 21mm
    Women: 20mm
  • Forefoot height
    Forefoot height
    Men: 11mm
    Women: 10mm
  • Width
    Men: normal
    Women: normal
  • Release date
    Release date
Show more facts


We spent 8.7 hours reading reviews from experts and users. In summary, this is what runners think:

6 reasons to buy

  • The Gel DS Trainer 21 comes with an updated upper which is more durable and breathable.
  • The Seamless Construction allows runners to wear this shoe comfortably without using socks.
  • Many runners appreciated the Heel Clutching System, which makes use of an exoskeleton that secures the rear part of the foot in place.
  • The shoe’s traction and grip were enhanced and runners found it to be very effective.
  • The 21st version of the Asics Gel DS Trainer delivers a good blend of support and cushioning through high quality components in the mid-sole.
  • It features the ComforDry Sock Liner technology, which keeps the foot dry and odor-free.

3 reasons not to buy

  • Some runners noted that the outsole was a bit too hard that it didn’t quite hold onto the roads pretty well.
  • Others experienced the upper unit near the heel area rip apart after a few months.
  • A few felt their toes get clumped together by the narrow forefoot area.

Bottom line

The Gel DS Trainer 21 from Asics is a shoe that is ideal for road running. It has the necessary support and cushioning systems that are essential for performance training and high mileage running. Generally, the runners found this version more satisfying than the older versions.


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.

90 / 100 based on 2 expert reviews

Show moreless reviews
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Updates to Asics Gel DS Trainer 21

  • The 21st iteration of the Asics Gel DS Trainer is a daily training shoe that provides plush underfoot support and mild stability to those who need it. The mid-sole cushioning systems are efficient and the upper gives a secure and comfortable wrap. Wearing this shoe makes running easier and more agreeable to the runner.
  • Moving away from the plain and simple design of the DS Trainer 20, the Gel DS Trainer 21 offers a more appealing look that has a modern and sleek style. The value of the upper unit isn’t just about its looks, though. It uses a soft and breathable material that keeps the foot well-ventilated. The coverage is also snug and secure.
  • A bevy of mid-sole systems make up the plush and dependable platform of this running shoe. Comfort is received through a soft foam that also delivers rebound mechanics. A forefoot-and-heel impact protection unit makes sure that the foot stays safe from landing shock. The gait and running efficiency is guided by this high quality mid-sole.
  • The purpose of the outsole unit of the Asics Gel DS Trainer 21 is to bring durable protection against wear and abrasion, as well as delivering responsible traction over the roads. It’s also meant to be lightweight, so that it doesn’t drag the mid-sole down while still allowing flexibility.

Asics Gel DS Trainer 21 size and fit

The Gel DS Trainer 21 features a standard running shoe length. It’s available in sizes that adhere to the regular measurements for men and women. The available width is medium, so it accommodates runners whose feet are medium-sized. This shoe’s semi-curved shape allows the natural shape of the foot to acclimate well to it.


The Asics High Abrasion Resistant Rubber or AHAR® is a high quality rubber material that’s meant to deliver durable protection against the abrasive nature of the asphalt. Made from carbon rubber, it doles out its purpose well, and it also doesn’t peel off easily.

The DuraSponge® is a forefoot rubber compound that adds a bit more cushioning to the runner, particularly during toe-off. Its responsive and flexible, so it allows the foot to move as freely as it can as it delivers traction and protection.

The DuoSole® design doesn’t make the external layer heavy or thick. It allows the rubber materials to do their job well, though it reduces weight. Traction, flexibility and durability are all preserved.


The Solyte® is a full-length foam that delivers responsive cushioning to the runner. It has a springy nature, so it makes each step more efficient and energized. It’s made from high quality materials, so it doesn’t break down easily.

The Gel® Cushioning System is a gel unit that’s based from silicon. It’s placed separately in the heel and forefoot sections. It handles the impact shock when landing the foot on the ground, so the runner stays confident and protected throughout every running activity.

The Lightweight Dynamic DuoMax Technology is a dual-density mid-sole foam that stabilizes the mid-foot of the wearer. It responsibly supports the arch and guides it to a more neutral stance, so that the runner stays efficient and free from discomfort or injury when running.

The Guidance Line® is a visible vertical flex groove in the upper that leads the foot to a more efficient running gait, while an Impact Guidance System® is a mid-sole construction that balances the transition from the heel to the toe.

The Propulsion Trusstic System is a unit that’s made from thermal plastic. Used to connect the medial mid-foot and the lateral heel section, its purpose is to propel the runner forward on each step.


Open Mesh is a soft and breathable material that’s used in the Asics Gel DS Trainer 21. It constantly encourages air to enter the shoe and keep the foot cool and dry throughout every activity. It’s also pliable, so it follows the movements of the foot well.

The Seamless Upper Construction limits the use of stitching and virtually removes seams out of the picture. Instead, the overlay system is fused onto the upper, reducing the overall weight of the shoe and allows unrestricted movement.

The Heel Clutching System™ is an exoskeletal heel part that holds the rear of the foot in place. It prevents any slippage or accidental shoe-removals, essentially making the fit surer and more secure.
The ComforDry™ gives the runner additional cushioning. Placed just above the mid-sole unit, it also keeps the interior environment clean and healthy because of its anti-microbial and anti-moisture properties.