Asics Fuji Speed 4 Men's Trail Running Shoes

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ASICS Fuji Speed 4 Men’s Trail Running Shoes

The ASICS Fuji Speed 4 is built for Kiwi trail runners who want to move fast without sacrificing control. Designed for technical trails, this shoe balances lightweight comfort, responsiveness, and reliable grip so you can tackle climbs, descents, and rocky tracks with confidence.

The dual-layer FF BLAST PLUS™ midsole gives a springy, energetic ride while keeping each step cushioned, so your feet stay fresh even on longer runs. A full-length, trail-optimised PEBAX propulsion plate helps drive your stride forward and adds stability on uneven terrain, making uphill sprints and downhill technical sections smoother.

The woven upper keeps the shoe light and durable, protecting against abrasion from rocks and roots, while the ASICSGRIP™ rubber outsole and 3.5 mm lugs deliver excellent traction across mud, gravel, and loose dirt. The elastic lace band on the tongue keeps laces secure so you can focus on your run, not retying your shoes.

Key Features

Lightweight woven upper for durability and reduced weight
Trail-optimised PEBAX propulsion plate for improved control and forward drive
Dual-layer FF BLAST PLUS™ cushioning for responsive, cloud-like comfort
ASICSGRIP™ outsole with 3.5 mm lugs for traction on varied trail surfaces
Elastic lace band to keep laces tucked and secure
Colour: Light Dust / Aurora Green

Who They’re For

Trail runners looking for speed and control on technical terrain
Athletes tackling long runs, mountain trails, or uneven surfaces
Runners who value lightweight, responsive cushioning with reliable grip

FAQs

Are these suitable for muddy or wet trails?

Yes. The ASICSGRIP™ outsole and 3.5 mm lugs handle wet, slippery, and loose terrain with confidence.

Do they provide enough cushioning for long trail runs?

The dual-layer FF BLAST PLUS™ midsole delivers cloud-like comfort while keeping the shoe light and responsive.

Can I use them on rocky or root-strewn trails?

Absolutely. The woven upper is abrasion-resistant and the PEBAX propulsion plate adds stability on technical surfaces.

Key Details

Surface: Trail.
Cushioning: Extra.
Support: Neutral.
Weight: 242 grams.
Heel-to-toe drop: 5 mm (34-29mm)
Colour: Light Dust / Aurora Green

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Cushioning

The material that absorbs the impact against the ground. The more cushioning utilised, the softer a shoe will feel underfoot.

Neutral Support

Normal sized Arches.
During push off there is an even distribution from the front of the foot.
The foot lands on the outside of the heel, then rolls inward to absorb the shock and support body weight.

Drop

The difference from the heel of the shoe to the forefoot.
Shoes with a higher heel drop tend to be preferred by runners that land heel-first.
Shoes with a lower heel drop are often favoured by forefoot or midfoot strikers.

ASICS
MEN'S
US	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12	12.5	13	14
UK	6	6.5	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12	13
EU	40	40.5	41.5	42	42.5	43.5	44	44.5	45	46	46.5	47	48	49
CM	25.5	25.75	26	26.5	27	27.5	28	28.25	28.5	29	29.5	30	30.5	31

WOMEN'S
US	8.5	9	9.5	10	10.5	11	11.5	12
UK	6	6.5	7	7.5	8	8.5	9	9.5
EU	40	40.5	41.5	42	42.5	43.5	44	44.5
CM	25.5	25.75	26	26.5	27	27.5	28	28.25

Please note that sizes and fit may vary depending on the model of footwear.


MEN'S SHOE WIDTH
D	Standard
2E	Wide
4E	X-Wide

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