We spent 5.7 hours reading reviews from experts and users. In summary, this is what runners think:

7 reasons to buy

  • Many of the users who reviewed the Saucony Endorphin Racer 2 said that they were comfortable.
  • For most runners, the shoe felt lightweight but still gave enough protection underfoot.
  • Some users loved the colorway of the shoe.
  • One user was impressed about the overall barefoot experience the shoe provided.
  • Another user said that the grip was sufficient on asphalt even when it was raining.
  • One runner appreciated how quick and responsive the shoe was.
  • Most testers felt that the shoe was highly breathable.

6 reasons not to buy

  • A lot of runners mentioned that the toe box was narrow.
  • One tester felt that the shoe was slightly expensive.
  • Another user was disappointed to find out that the insoles were not removable.
  • Most reviewers got their pair in a half size bigger than the usual.
  • A majority of the reviewers mentioned that the bottom of the shoe was stiff. It apparently caused them to experience foot pain while walking or running.
  • Two users narrated that their shoe developed a tear on the lateral sides after about 2 to 3 months of usage.

Bottom line

Saucony’s Endorphin Racer 2 is a neutral, road running racing flat, with a number of features that make it light yet innovative. With a zero heel-to-toe drop, runners will have a better feel for the ground without worrying about underfoot protection. The price for this speedy pair is a bit on the higher range, but the technologies and its durability as a racing flat makes up for it. There’s no denying that this shoe was built to go fast.


  • 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: 4.1oz
    Women: 4.1oz
  • 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: 10mm
    Women: 10mm
  • Forefoot height
    Men: 10mm
    Women: 10mm
  • Width
    Men: normal
    Women: normal
  • Release date
    Feb 2017
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.

81 / 100 based on 2 expert reviews

  • 84 / 100 | Doctors of Running

    If you are looking for an awesome lightweight racing flat with slightly higher volume and a partial TPU midsole, then I would definitely check the Endorphin Racer 2 out.

  • 77 / 100 | Fellrnr

    With the Endorphin 2, I found that when I had a ideal fit from the ball of my foot back, the toe box was radically too small.

  • First look / Unboxing | Running Warehouse

  • First look / Unboxing | Running Warehouse

Show moreless reviews
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Updates to Saucony Endorphin Racer 2

  • Starting with the upper updates of the second version of Saucony’s Endorphin Racer, a single layer of mesh was placed on this area of the shoe to entirely cover the foot. Staying true to the ultra-lightweight theme of the shoe, the material that Saucony used does not add to the weight, but provides the foot with enough breathability and protection. Minor revamps were made on the design of the upper and the construction of the lacing system.
  • Most of the updates on this shoe were concentrated on the midsole and outsole as Saucony attempts to improve this racing flat’s cushioning, responsiveness, traction, and durability.
  • The midsole SSL EVA on the forefoot was replaced with an EVERUN forefoot material to provide a more responsive type of cushioning that helps to evenly distribute the force felt by the runner upon ground impact. The rest of the midsole retains the SSL EVA material, but the switch allows the runners to experience an enhanced ride.
  • On the outsole, the XT-LITE material from the first version of the Endorphin Racer was updated with a PWRTRAC tacky rubber compound. This innovation aims to heighten the traction capability of this iteration and make it more adaptable to various terrain.

Saucony Endorphin Racer 2 size and fit

The Endorphin Racer 2 comes in standard shoe measurements. Runners will be able to choose from standard shoe lengths, as well as widths. The shape of the shoe is curved, following the natural lines of the underfoot. In addition, it’s important for runners to remember that the arch structure of the shoe is low, the stack height is minimal, and the offset is 0mm.


The Saucony Endorphin Racer 2 was meant to be a road shoe, but with its PWRTRAC outsole, it can tackle different terrains without the runner slipping or sliding. The PWRTRAC is a rubber compound with a tacky characteristic for better traction.

To enhance this outsole feature further, the tread pattern was designed with triangular protrusions and indentions in different sizes and going in different directions. This tread ensures that the grip of the shoe on most surfaces is secure.

In addition to the characteristics mentioned, the PWRTRAC is also highly resistant to abrasion and is a durable compound rubber. This means that the shoe may be able to last for a longer period of time even with continuous usage.


There are two parts to the midsole. On the forefoot is the EVERUN which concentrates on providing a responsive cushioning. To allow this functionality, Saucony placed this technology closer to the foot. It adapts to the runner’s needs through the combination of the molded SSL EVA on the heel. When the runner’s heel lands, the EVA absorbs the shock while the EVERUN reduces the pressure on the forefoot during take-off.

Water drainage ports were also provided to reduce the shoe’s weight as well as aid in the ventilation dynamics of the shoe.


On the upper is a single mesh layer that covers the foot entirely. This material is lightweight and very breathable. Upon closer inspection, the material the upper is made of is somewhat see-through. That’s how thin it is. This doesn’t offer much in terms of protection, but the shoe was built for speed rather than every day or trail running.

To provide a lightweight lockdown to the midfoot, FlexFilm overlays were added. From the name, these overlays can move easily when the shoe bends, expands, or twists. The overlays are not rigid, but they still provide minimal snugness and security to the midfoot.