Trail Running Shoes
New Balance FuelCell Venom First Impressions: A Lightweight Trail Shoe Worth a Look
A lightweight, responsive trail shoe built on FuelCell foam that excels on compacted trails but shows its limits on technical ground.
Introduction
New Balance’s lightweight trail running shoe, the FuelCell Venom, has quietly flown under the radar while its road-running sibling, the Rebel v4, gets most of the attention. That lack of hype feels unjustified: this is a light, cushioned and responsive trail shoe that could suit a lot of runners, provided you understand its limits.
The Venom retails in the UK for £130 and sits on a 6mm heel offset. New Balance positions it as a lightweight, fast trail shoe, and on paper it borrows a lot from the Rebel v4 recipe, including the same FuelCell foam in the midsole.
Specs and Design Overview
In a UK 10, the Venom tips the scales at 279g, so it is not quite as light as the Rebel v4 but still genuinely light for a trail shoe with a deeply cushioned midsole. The test pair came in the Tea Tree and Neo Flame colorway, which is a rather good-looking combination.
The upper uses a dual-layer engineered mesh construction that feels substantial and should hold up well to trail miles. It is a more traditional design than the stripped-back, almost transparent upper on the Rebel v4. A substantial toe bumper offers good protection up front, while the tongue is gusseted but thin, with limited padding, and the heel and ankle collar carry a moderate amount of cushioning. The heel cup is notably high, and there is an unusual, slightly wonky-looking heel loop that appears to be intentional.

First Run in the Mountains
The test run took place on roughly seven miles of mountain terrain, mixing tarmac sections, compacted paths and some genuinely technical trails, with plenty of elevation gain. That is a demanding straight-out-of-the-box test.
Early in the run, sizing became the main talking point. New Balance shoes typically run small, so a half size up was already chosen, and they still felt snug on a longer foot, with the toes sitting close to the end of the toe box. On a longer effort, a full size up would likely be the safer call.

Upper, Fit and Comfort
Midfoot lockdown is excellent, with a secure hold and no heel slippage or movement. The bottom two lace eyelets did feel rough against the top of the foot when trying the shoes on indoors, a real worry at first, but once running, they were completely unnoticeable.
The thin gusseted tongue was comfortable enough, though a little more padding would be welcome on longer efforts. Overall, apart from running small, the fit and upper performance were solid.

Outsole and Traction
The outsole features a bright red triangular lug pattern with around 4mm of lug depth, finished with New Balance’s Hydroion rubber, which has performed well on other New Balance trail shoes in the past.
On the trail, it delivered good traction on loose gravelly surfaces and inspired confidence on a steep wooded section. It also felt sticky across wet rocks during small stream crossings. The main limitation is deep mud, where the lugs would likely struggle. For everything else, it should handle most trail conditions you throw at it.
Midsole Performance and Stability
FuelCell foam has been a favourite since the Rebel v2 days: lightweight, responsive, comfortable, and lively underfoot. The Venom keeps that character, and on compacted trails and tarmac the midsole performed really well, feeling very similar to the Rebel v4.
The catch is softness. On more technical sections, the foam felt spongy enough to allow some medial and lateral roll when landing unevenly on rocks or roots. A few minor ankle rolls occurred, nothing serious, but enough to demand careful foot placement. Runners who value stability on rough ground may find this the shoe’s biggest weakness.

Buying Advice
If most of your trail running happens on compacted trails, towpaths, fire roads and stretches of tarmac, the Venom does that job really well and feels quick and exciting to run in. If you need to move fast over technical trails, there are more stable-feeling trail shoes out there, and the soft FuelCell midsole is the reason.
Sizing is the other key decision: plan to go up at least half a size, possibly a full size, especially if you have longer feet or plan longer outings.
Conclusion
The FuelCell Venom is a comfortable, lightweight and responsive trail offering from New Balance that deserves more attention than it has received. It is at its best on smoother, mixed terrain, where its FuelCell midsole makes it feel genuinely fun and fast. Just size up and save it for trails that are not too technical.
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This product is mentioned in the review. Check the specifications, options, and compatibility before buying.
View more details for New Balance FuelCell Venom