Update: Gel Flux 4
Arch support
Daily running
M: 326g | W: 269g
Heel to toe drop
M: 10mm | W: 10mm
Heel height
M: 23mm | W: 22mm
Forefoot height
M: 13mm | W: 12mm
Widths available
M: Normal - D, Wide - 2E, Extra wide - 4E | W: Normal - B, Wide - D
Show moreless facts


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

7 reasons to buy

  • The Gel Flux 3 has breathable upper mesh and overlays that promote a snug and secure fit based on the comments of several runners.

  • Some runners applauded the DuraSponge Outsole of the shoe that offers flexibility and responsive cushioning.

  • The silicone-based gel cushioning promotes efficient shock absorption.

  • Others were impressed by the durable construction of the Asics Gel Flux 3.

  • Comfort is amazing, according to a handful of runners.

  • The transition is decent while responsive cushioning is noticeable based on some reviews.

  • Runners took note of the shoe's good arch support.

3 reasons not to buy

  • The shoe is too narrow for some runners.

  • Some felt that there is less cushioning on the sole.

  • A few mentioned that the shoe feels heavy while running.

Bottom line

The Asics Gel Flux 3 is a road running shoe that offers a combination of flexibility and responsive cushioning. The durability and the technology used made this shoe best for short and long distance runs as well as for daily training.

World wide, Gel Flux 3 is in the top 20% most popular running shoes. The brand, Asics, is the 2nd most popular.

Map: Shows popularity per continent based on 1010 shoes


4.6 / 5 based on 599 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.

Are you an expert? Apply to contribute here.

83 / 100 based on 2 expert reviews

  • 90
    Haley & ConnorLevel 1 expert
    by Haley & Connor
    I think this shoe would be amazing for gravel or rough terrain because of the extra cushion and support that the shoe does have.
  • 80
    Frank DuCettLevel 3 expert
    by RunRepeat
    My purchase of the Asics Gel Flux 3, has turned out to be one of the better shoe buying decisions I had ever made.
    The Asics Flux 3 is the best shoe in this price range, with lots of quality carrying over from the more costly Asics.
    Quality is remembered long after price is forgotten!
  • Show moreless reviews
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These are visual presentations, not reviews

  • Sunshine Shop Zappos
    This shoe features a breathable upper and durable synthetic overlays.

Updates to Gel Flux 3

The 3rd version of the Asics Gel Flux gives reliable cushioning that’s ready to tackle the asphalt. The platform itself is smooth and comfortable. Breathability and security is handled with grace by the upper unit’s open mesh & synthetic overlays, while the outsole is as protective and durable as ever with its high quality rubber materials.

Some of the components in the mid-sole are present in order to give the runner a more efficient gait. Transitions from the heel to the toe are much smoother because of a specific unit that guides the stride. The structural integrity of the shoe is also preserved by a lightweight, but sturdy system in the mid-foot section.

Impact protection is a helpful feature that gives the runner more confidence when traversing the ground. Landings don’t become worrisome and discomfort isn’t felt during this phase in the running cycle. The Asics Gel Flux 3 has a cushioning unit that is able to efficiently protect the foot from impact and shock.

The robust outsole unit of this running shoe uses two separate compounds that have a specific purpose. The heel area features a compound that is very durable and defensive against wear and abrasion. The forefoot area uses a more responsive rubber that gives additional cushioning during toe-off. Both of these compounds deliver responsible traction over the roads.

Gel Flux 3 size and fit

The Asics Gel Flux 3 has a standard running shoe length. The men and women’s sizes follow the regular measurement schemes, so runners can get the right one. The available width is medium, so this shoe can accommodate runners whose feet have regular dimensions. The semi-curved shape allows the natural curvature of the foot to acclimate well to the running shoe when wearing it.


The AHAR® or the Asics High Abrasion Resistant Rubber is a carbon rubber unit that’s primarily placed in the heel section of the Gel Flux 3. It delivers exceptional durability that holds well against abrasion and wear. It also gives traction, so surface control is agreeable and responsive.

The DuraSponge® Outsole is a blown rubber compound that’s placed in the forefoot section. It’s softer and more responsive, so it adds a bit more cushioning and flexibility, especially during the toe-off phase of the gait cycle.


The SpEVA® is a full-length foam that gives high quality cushioning and support for the foot. It has a springy nature, so each step benefits from a bit more bounce. It also decreased mid-sole breakdown because of its durable build.

The Gel® Cushioning System is found separately in the heel and forefoot sections of this running shoe. Made from a gel that’s based from silicon, it is able to absorb the shock when landing the foot on the ground. It makes each landing less tasking to the foot of the runner.

A Guidance Line® is a vertical groove that runs along the entire length of the Asics Gel Flux 3. It guides the foot through the gait cycle so that each step becomes more efficient.

The Guidance Trusstic System® is mid-sole support unit that maintains the structure of the shoe and adds torsional rigidity for better transitions.


The upper unit uses open mesh, which is a soft and comfortable material that has an open construction. It delivers breathable and secure coverage at all times. It constantly lets air inside the shoe to keep a cool and dry environment for the foot.

Synthetic Overlays have been stitched onto the main fabric. They provide structure to the upper while also making the fit more customizable by responding to adjustments made with the lacing system.

Additional cushioning is afforded by a Standard Sock Liner. Placed right above the mid-sole unit, this layer makes the platform plusher and more comfortable for the underside of the foot.


Comparison to category means
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