Road Running Shoes
inov-8 RoadFly First Run Review: A Natural Road Shoe in a Bouncy World
A first run of roughly 8 miles in the new inov-8 RoadFly, covering fit, sizing, the Powerflow Pro midsole, grip, and who this road shoe actually suits.
Introduction
Road shoes are not something inov-8 has offered in a long while, and the new RoadFly is the brand’s real entry into one of the most competitive shoe markets out there. First impressions matter here, because the entire road running scene has changed dramatically since the company last built a shoe for the hard stuff. This is a shoe with a £100 UK retail price, a flexible Powerflow Pro midsole borrowed from the much-loved TrailFly, and a very light, roomy upper. After an initial run of just under 8 miles, the early picture is genuinely positive, with a few caveats worth understanding before you buy.
Spec, Fit, and Sizing
The headline numbers are approachable rather than extreme. The RoadFly weighs 283g in a UK 10 and runs on a 6mm heel offset, with 27mm of stack at the heel and 21mm under the forefoot. It comes in two width options: a standard fit and a wide fit, though inov-8’s anatomical, foot-shaped design already provides a fair bit of room in the toe box of the standard version.
Sizing is the first thing to get right. In testing, the RoadFly runs a little small, consistent with most inov-8 shoes. Going up half a size from a UK 9.5 to a UK 10 delivered perfect length in the toe. Some wearers report it as true to size, but the safer recommendation is to go up at least half a size.

Upper Comfort and Construction
The upper uses a standard-looking engineered mesh with plenty of perforations across the midfoot, tongue, and toe box for airflow. Structurally, there are overlays around the lace eyelets for durability, a bit of toe box structure to give the soft upper form, a padded gusseted tongue, a soft ankle collar, and a heel pull tab for easy entry. Out on the road, that upper felt light, airy, and comfortable straight out of the box, with good midfoot lockdown and solid heel hold. Anyone who has struggled with thin, uncomfortable inov-8 tongues in the past will find the padding here a welcome change.
Midsole and Outsole Performance
The midsole setup mirrors the inov-8 TrailFly: the same Powerflow Pro foam and the same 6mm offset. Pairing that with the brand’s Boomerang footbeds, which come included at this £100 price point, keeps comfort levels high on unforgiving tarmac.
The standout characteristic is flexibility. Where many modern road shoes carry deep, wide midsoles with carbon or TPU plates that feel rigid, the RoadFly flexes nicely through the midfoot and forefoot thanks to the MetaFlex groove worked into the outsole. That, combined with a lower, less cushioned platform, delivers a very natural, connected feel, closer to how road shoes felt before big bouncy midsoles took over.

It is worth being clear about what this shoe is not. If you want a deeply cushioned, high-energy-return ride like a Saucony Endorphin Speed 4 or Hoka Max 6, the RoadFly will likely feel under-cushioned. This is a shoe for runners who are tired of midsoles getting bouncier and stacks getting higher, and who want to feel more connected to the road instead. There is also talk of a future Max version with a deeper stack, which paired with this light, roomy upper could be the shoe for the masses.
Grip and the Shiny Rubber Question
The full rubber outsole initially looked concerning: the rubber appears quite shiny, which usually raises doubts about wet grip. Those doubts did not survive contact with the road. Testing took place on greasy tarmac covered with wet fallen leaves, a genuinely tricky combination, and the outsole held up with no slippage at all.

Things to Consider Before Buying
A few practical points before ordering. First, size up at least half a size, since the RoadFly runs small and a normal-size fit puts you right against the toe. Second, manage expectations on cushioning: this is comfortable and natural-feeling, but it will not deliver the plush, springy ride of modern max-stack road shoes, and if that is what you have grown used to, the RoadFly may feel a little flat for your taste.
One genuine annoyance: the laces are absurdly long. Triple-tying them was necessary to stop them flapping around, so expect to deal with excess lace length out of the box.

Buying Advice
The RoadFly makes the most sense as a comfortable, natural-riding everyday road shoe for runners who prize flexibility, a roomy toe box, and road feel over maximum cushioning. At £100 in the UK, with Boomerang footbeds included and grip that handles wet autumn tarmac confidently, it represents solid value in a market where prices have climbed steeply. Runners who want a bouncier, deeper cushioned ride should wait, ideally for a potential Max version with a bigger stack.
Conclusion
For a brand’s return to road running after a long absence, the RoadFly is a convincing first effort. The upper is light, airy, and comfortable from the first mile, the flexible Powerflow Pro midsole delivers a natural, connected ride, and the outsole grips well in poor conditions. Size up half a size, accept the modest cushioning, and this is a genuinely good road shoe at a fair price.
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