• 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: 7.6oz
    Women: 7.7oz
  • Heel to toe drop
    Men: 8mm
    Women: 8mm

    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: 23mm
    Women: 23mm
  • Forefoot height
    Men: 15mm
    Women: 15mm
  • Width
    Men: Normal
    Women: Normal
  • Release date
    Jan 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.

91 / 100 based on 3 expert reviews

  • 98 / 100 | Road Trail Run | | Level 5 expert

    It's comfortable, roomy for a race shoe yet with a secure upper. It should be ideal for warm weather races and wet conditions. The response is outstanding. This shoe is ideal for "marathon pace" and somewhat faster running.

  • 88 / 100 | Trail & Kale | | Level 3 expert

    ...these shoes are definitely worth giving a try. And if you already run in S-Lab trail shoes but need a similar feel and fit for training on the roads, the Sonic 2s will be the perfect transition, as you’ll already be used to the “S-Lab feel” that you probably love.

  • 80 / 100 | OutdoorGearLab | | Level 2 expert

    We are very impressed by the Sonic's fluid ride and secure fit, combined with their extreme light weight. The flexibility and protection given underfoot, which we've come to expect from a road shoe, was presented in this hybrid/cross-over running shoe.

  • First look | Shop Zappos |

  • First look | Running Warehouse | | Level 4 expert

  • First look | Running2life.com

Become an expert

  • The Salomon S-Lab Sonic 2 strives to be the athletes’ first choice for road-running, as it works doubly to bring speed, endurance, and performance all at once. The shoe’s features make it ideal for race day, as it enables the runner to move smoothly and naturally.
  • Although the upper still employs Sensifit overlays like the previous version, the S-Lab Sonic 2 displays an improved overlay pattern, one that appears thinner and minimal. The ankle collar has also changed, now lower yet broader compared to the first release.
  • The shoe retains the EnergyCell+ cushioning as it ensures ultimate performance even in longer runs. Meanwhile, the updated outsole now uses Premium Wet Traction Contagrip®, which offers an efficiently sticky grip, even on wet surfaces.

The Salomon S-Lab Sonic 2 is true to size, and runners will find an accurate fit with their regular size preference. The forefoot area of the shoe has a broad construction, allowing wearers to enjoy a natural toe splay. The S-Lab Sonic 2 is a unisex shoe and is available in men’s medium width.

Same as in the popular Salomon Sense Ride 2, the S-Lab Sonic 2 uses Premium Wet Traction Contagrip® in its outsole. This material is a durable rubber compound covering the length of the shoe, protecting the outsole against rough trails. Meanwhile, the high-wear areas have another layer of firmer rubber.

The outsole pattern employs the Geometric Decoupling system. With the square shapes close together, there is just the right amount of energy to enable a smooth stride. This feature means an easy touchdown and forward propulsion for the foot.

The Vibe technology in the midsole of the S-Lab Sonic 2 is the result of two cushioning structures fused together – the EnergyCell+ and the Opal. They work together to combat fatigue and promote a responsive ride.

The EnergyCell+ is a compression-molded ethylene-vinyl acetate (CMEVA) foam that has a high-rebound property. It aims to supply an exceptional energy return. Aside from that, it also equips the shoe with substantial cushioning.

Meanwhile, the Opal is a cushioning compound inside the midsole that provides a soft underfoot feel. It is lightweight, durable, and resistant to extreme temperatures.

The midsole’s framework comes in the form of 3D Profeel, a thermoplastic urethane (TPU) film that gives support. It adds protection without restricting ground sensation.

With a die-cut EVA sock liner, there is an added cushioning and comfort. The material is breathable as well.

The upper of the S-Lab Sonic 2 is a quick-drying double layer of mesh and nylon. It presents breathability, as well as abrasion resistance. Its internal lining is the Endofit™, a sleeve that hugs the foot for a glove-like fit. It moves with the foot, thus preventing chafing and irritation.

The brand’s proprietary Sensifit upper construction delivers a glove-like fit, capably gathering sufficient energy for forward propulsion that results in more miles.

There are two stretch panels on the medial and lateral sides of the forefoot, called 3D Flex. They relieve the pressure around the toes and forefoot, thus promoting a natural and comfortable run.

The shoe’s closure system is traditional lace-up, which encourages an easy and familiar way of adjusting the fit of the shoe.