The Quick Verdict
Bottom Line: KEEN has taken the legendary, out-of-the-box comfort of their classic Targhee line and put it on a diet.
The new Apex is significantly lighter and more agile, making it a fantastic choice for fast-paced day hikes, though it sacrifices some of the rigidity needed for heavy multi-day backpacking.
Pros & Cons
- Extremely lightweight at around 315g per boot.
- Signature KEEN roomy toe box allows toes to splay naturally.
- The new KEEN.ReGENX midsole provides a bouncy, highly responsive ride.
- Lighter materials mean less ankle support for carrying heavy rucksacks on huge expeditions.

Why Trust This Review?
To see how these handled the UK weather, Jen spent the last few weeks putting the Targhee Apex through their paces across Wales and Scotland.
We sourced these directly from KEEN via keenfootwear.co.uk.
Ordering straight from the manufacturer is always a brilliant way to ensure you have access to the absolute latest colourways and size runs that third-party retailers might not carry, as well as experiencing their direct delivery service first-hand.

Specs at a Glance
|
Weight |
Approx. 315g (11.1 oz) per boot |
|
Upper Material |
Performance mesh with durable overlays |
|
Waterproofing |
KEEN.DRY breathable membrane (PFAS-free DWR) |
|
Midsole |
KEEN.ReGENX high-rebound foam |
|
Outsole |
KEEN.ALL-TERRAIN rubber with multi-directional lugs |
Out on the Trail: Real-World Performance
Comfort and Fit
The biggest selling point of the Apex is the immediate comfort.
If you have worn KEENs before, you will recognize the familiar, generous forefoot space.
Jen noted that there was zero break-in period required.

The real game-changer here is the new ReGENX foam midsole, which absorbs impact brilliantly and feels much springier and less fatiguing than older, denser hiking boots.
Grip & Weather Resistance
The KEEN.ALL-TERRAIN rubber outsole does a solid job biting into standard UK trail mud and wet grass.
While trying to keep up with Malc and Pete on the fells, Jen found the multi-directional lugs provided confident braking on steep, loose descents.

The KEEN.DRY membrane successfully kept the morning dew and puddle splashes out, though like most waterproof membranes, breathability drops on warmer days.
Weight vs. Support
Weighing in at just over 300g, these feel closer to a trail running shoe than a traditional hiking boot.
You get a protective toe cap and a mid-height ankle collar to keep debris out, but the lighter build means less structural rigidity.
Jen really felt a huge positive difference using these boots over rocky and uneven ground compared to her old boots. She felt much more confident in her foot placing meaning she could concentrate more on enjoying the scenery.

Who is this for? (And who should skip it?)
Perfect for: Fast-and-light day hikes, dog walkers, and anyone who loves a wide toe box but hates the feeling of heavy, clunky boots dragging their feet down.
Skip it if: You are tackling highly technical alpine scrambling or carrying a massive 65L rucksack where you need stiff, uncompromising ankle support.
How It Compares
KEEN Targhee Apex vs. KEEN Targhee IV
If you are weighing up KEEN options, it comes down to your hiking style.
The standard Targhee IV is a heavier, more traditional leather workhorse built for durability and rougher terrain.
The Apex trades that heavy-duty armour for speed, breathability, and significantly less weight.
If you prefer feeling light on your feet, the Apex is the modern upgrade.

Final Thoughts & Where to Buy
The KEEN Targhee Apex successfully bridges the gap between a robust hiking boot and an agile trail shoe. It delivers that famous KEEN comfort in a much faster package.
Colour chosen by us: Lily Pad/Fig
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