• 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: 9.9oz
    Women: 8.5oz
  • Heel to toe drop
    Men: 5mm
    Women: 5mm

    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: 28mm
    Women: 28mm
  • Forefoot height
    Men: 23mm
    Women: 23mm
  • Width
    Men: Normal
    Women: Normal, Wide
  • Release date
    May 2016
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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.

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84 / 100 based on 10 expert reviews

  • 75 / 100 | The Ginger Runner

    These are durable.

  • 94 / 100 | Road Trail Run

    I have enjoyed them for moderate tempo long runs, trail running and with their outstandingly comfortable upper and toe box for every day wear.

  • 77 / 100 | Gear Institute

    The Topo Athletic Ultrafly is best for runners looking for a low foot drop shoe with anatomic foot shape and significant cushioning for high mileage training.

  • 86 / 100 | iRunFar

    While technically a road shoe, the Ultrafly has the pedigree to handle all but the most technical trails.

Show moreless reviews
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  • The Topo Athletic Ultrafly is a running shoe that, while having a low profile, is designed to be the most cushioned shoe from the brand. It is intended to provide a natural ride suitable for daily training with its level of cushioning and support.
  • Its rubber outsole runs the length of the shoe for increased durability and traction.
  • With its 3-piece EVA midsole, there is a significant amount of cushioning and guidance throughout the gait cycle.
  • An anatomical toe box is present to promote a more natural toe splay.
  • The lightweight mesh upper with strategically-placed printed overlays and molded heel stays to provide a snug fit without dragging the foot down with unnecessary bulk.

The Ultrafly is a road running shoe that caters to neutral pronators and overpronators. As it delivers a roomy toe box, the shoe is suitable for users with a high-volume foot or those looking for a shoe that allows for a wide toe splay. Despite its cushioning, the shoe fits true to size. The available width profiles are D – Medium for men and B – Medium for women.

A thick carbon rubber makes up the entire length of the outsole of the Ultrafly. Featuring an aggressive, high-abrasion design, it aims to handle rough road excursions with its increased grip and durability. This outsole material is also used in the Ultrafly 2 running shoe.

Because it is a road running shoe, the Ultrafly’s outsole structure does not consist of gripping lugs, but instead it is designed with cutouts to provide traction on either rough or slippery pavement.

The midsole consists of a three-piece EVA with varying firmness: part one is a white portion, which is the main layer; part two is a unit on the medial side that is 12% harder than the white portion; part three is a small portion on the lateral side that is 10% softer than the main foam layer. This multi-density design allows for two levels of cushioning: soft against the foot and firmer against the ground.

While relatively dense, the midsole remains lightweight to allow easy running on uphill roads.

The firm unit on the medial side the of the platform acts as a stabilizing unit that amends overpronation. It evens out the running gait, thus preventing discomfort or discrepancies in the performance.

The upper is made of a lightweight mesh material that is designed to provide the sensation of having a second skin. It also has a breathable nature, so the foot won’t feel any buildup of heat or sweat. There are strategically-placed printed overlays that maintain the strength of the upper unit without adding weight.

With its spacious toe box, breathing room is given to the forefoot. It also allows the toes to spread naturally. It is covered by a rubber toe cap that is made wide and tall enough to prevent abrasions while running.

The heel collar is padded, yet semi-rigid. It wraps around the heel and keeps it securely in place. It is also designed to set the Achilles up for a snug fit.

The tongue is a lightly padded non-bootie construction that provides an adequate protection for the top of the foot.