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Inov-8 Trailfly Ultra G 280 trail running shoe review

Excellent levels of cushioning and bounce make this innovative shoe a great option for trail runners and ultra runners.

Our rating

4.8

Published: December 14, 2022 at 1:57 pm

Our review
Launched in October 2022, this lightweight trail-running shoe includes a new nitrogen-infused midsole foam that offers excellent levels of cushioning and bounce – a great shoe for off-road and ultra runners, especially if you have wide feet.

Pros:

Very comfortable and bouncy midsole Good grip Lightweight Breathable Nice colour choices

Cons:

Debris clings a little bit to lugs

Jump to product specifications

Since it was founded in 2003 in the Lake District, footwear, clothing and equipment brand Inov-8 has made a name for itself among the world’s trail-running and adventure-seeking communities.

Inov-8 believes “that an athlete's interaction with the environment is the single most important factor when designing products”, and as a result the brand’s kit is light, fast and often innovative. Case in point is the newly launched Trailfly Ultra G 280, which is Inov-8’s first ever trail-running shoe to include the use of nitrogen gas.

We at BBC Countryfile Magazine were keen to check out this new design, so we called in a pair and put them the test.

Hit the trail

What is trail running, why do it, and what do you need to get involved? We spoke to trail runner Sabrina Pace-Humphreys to find out everything you need to know about how to get started.

Sabrina Pace-Humphreys running in hills/credit: James Appleton, inov-8.com

Inov-8 Trailfly Ultra G 280 review

The obvious place to start with the Trailfly is the midsole – after all, it’s the ‘flying feeling’ offered by the midsole that inspired the naming of the shoe.

My first impressions were that despite the solid-looking appearance of the midsole, the shoes felt really light (280g per shoe), both in my hands and on my feet. This lightness is down to Inov-8’s new Flyspeed foam, a nitrogen-infused material that is soft, light and durable.

The result is an incredible level of rebound. This will please runners who are fed up with trudging along trails; instead, heavy legs feel light as they bounce along the path. According to Inov-8, testing showed that “Flyspeed foam gives back 65%-68% of the energy put in. A standard foam midsole gives back 45%-48%.”

The forgiving nature of the Flyspeed foam makes this a great shoe for long-distance running on rough terrain, as well short sprints around the block.

Inov-8's Flyspeed foam midsole makes this a great shoe for long-distance running on rough terrain/Credit: Inov-8

Inov-8 is known for creating footwear with the highest levels of grip, and the Trailfly is no exception (with one minor gripe). The 4mm-deep, multi-directional lugs are nice and grippy on hard-packed trails, and the graphene-enhanced rubber does an excellent job at delivering both durability and flexibility; the shoes dealt well with rough ground, bending when they needed to (aided by the 8mm-deep grove in the midsole) whilst offering protection against stray stones and tree roots.

On particularly muddy trails, I found debris tended to fill the gaps between the lugs, particularly on the heal of the shoes. This really is a minor gripe though and on the whole the Trailfly has excellent grip.

4mm-deep lugs and an 8mm-deep grove in the midsole give the shoes excellent grip/Credit: Inov-8

The upper bears all the desirable features of a good trail-running shoe. The knit material is breathable, the tongue padded (to a moderate level), and the toebox is wide, allowing your toes to spread out. The lacing system is unfussy and the laces themselves hold well without coming undone. Like the tongue, the ankle support is moderately padded.

The Trailfly Ultra G 280 fits true to size and is rated as a 5 on Inov8’s 1–5 width scale (5 being the widest).

The women’s version of the Trailfly Ultra G 280 shares all the same features as the men’s model, though colour choices vary.

Facts at a glance: Inov-8 Trailfly Ultra G 280

RRP: £165

Suitable for: trail running and ultra running

Fit: wide – 5 on Inov8’s 1–5 width scale (5 being the widest)

Weight: 280g / 9.8oz

Waterproof? No

Colourways: red, grey/blue and pine/nectar

Also consider...

Adidas Terrex Speed Ultra

Adidas Terrex Speed Ultra trail running shoe comes in an eye-catching blue ombre hue/Credit: Adidas

The Terrex Speed Ultra is a very good-looking shoe. The eye-catching blue ombre hue, streaked with hints of silver and coral (there are other colours available), is reminiscent of a dawn sky in spring. In fact, that’s a little bit how they feel when you first pull them on; light, airy and, to push the metaphor too its very limits, full of promise for what’s to come.

The shoes are super-comfortable with a form-enhancing midsole, supreme ventilation and a good level of traction, making this a solid mid-price option for all abilities.

Not quite what you're looking for? Discover more models in our roundup and review of the best trail running shoes.

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