Up and Under Trail Running

Welcome to the Trail and Ultra Running section of our website. Up and Under in Cardiff has been supplying fell running specific footwear for years, but has expanded into the wide ranging and glorious world of trail running in the past 10 years. We have a close working relationship with a number of trail and ultra race organizers in the area, most notably Run Walk Crawl, Ridge Runners and Up Hill Down Dale and have therefore expanded our range to cover Ultra Running products that can help you race on all terrains, through day and night, for 4 seasons of the year.

A lot of our core clothing ranges and equipment such as headtorches, first aid kits, whistles, etc. are equally appropriate for trail-running so don't forget to take a look around those sections or use our search if what you need isn't immediately obvious within this part of our catalogue.

We select the best trailshoes, packs, poles, vests, torches and clothing from baselayer through socks, shorts, tights and insulation to windproof and waterproof shell, hats and gloves and we have what you need for all your fell and trail-running needs, all carefully selected by our staff with insights from Run, Walk Crawl to suit you. It's all from the best brands, but see the quick links below to rapidly access some of our most popular. It's also worth having a browse outside of running through our Odlo range for extra warm quick drying, high wicking, lightweight base and midlayer clothing and everything beyond.

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Injinji

Women's Run Ultra No-Show

The Injinji Women’s Run Ultra No-Show toe socks are the ultimate choice for long-distance runners, combining essential performance features with the unique benefits of a toe sock design. By separating each toe, these socks eliminate skin-on-skin friction to prevent blisters and promote a more natural, unrestricted movement of your feet and toes. Experience comfort, protection, and enhanced performance mile after mile.

From £16.03 inc. VAT

Injinji

Women's Run Light-Weight No-Show

The Injinji Women’s Run Lightweight No-Show Socks have been built for female runners who value comfort and performance. With a narrower fit, COOLMAX® EcoMade fibres, and blister-preventing five-toe construction, they keep feet cool, dry, and supported. The low-profile design with heel tab ensures a secure, chafe-free fit, ideal for road or trail running.

From £13.37 inc. VAT

Julbo

Aerolite

The amazing hold is what makes the Aerolite work so well for trail running. It uses Grip Tech flexible inserts in key areas that hold your head comfortably and a 3D fit nose that adapts to your nose shape to give great fit. The bouncy contact between frame and ear or Air Link Temple System takes shock out of the ride and makes them stable during each impact.

From £169.84 inc. VAT

La Sportiva

Winter Running Gaiter

The La Sportiva Winter Running Gaiters have been designed to fit perfectly onto mountain running shoes. They feature an upper drawstring closure, a front hook for fixing laces, lateral YKK zipper and a lower silicone trim to increase grip when running. These gaiters are lightweight, waterproof and made with stretchy fabric.

From £37.81 inc. VAT

La Sportiva

Mutant

Is this the best allrounder fell shoe ever made? We love the La Sportiva Mutant off road running shoe here at Up and Under, and are sure you will too. It's also more supportive than many similar shoes, the Mutant feels light and responsive when on and will treat your feet how you always dreamt a shoe would do. These are a very versatile and stable running shoe, ideal for mountain running, sky races and off-road tail running across varying terrains.

From £136.51 inc. VAT

Oakley

Flak 2.0 XL

The Oakley Flak 2.0 XL sunglasses take performance and style to the next level with a standard-size frame that offers extended lens coverage, lightweight O Matter™ construction, and Unobtainium™ components for a secure fit. Featuring High Definition Optics® and optional Prizm™, polarized, or Iridium™ lenses, they deliver razor-sharp clarity and vivid contrast, making them perfect for sports, outdoor adventures, or daily wear.

From £133.22 inc. VAT

Oakley

Radar EV Path

The Oakley Radar EV Path have been inspired by decades of research alongside the world's best athletes. They feature a tall lens with an extended field of view in the upper peripheral region, providing ultimate levels of performance. Prizm lenses enhance colour, contrast and detail for an overall optimized experience, whilst Unobtanium ear socks and nose pads increase comfort.

From £160.43 inc. VAT

Odlo

T-Shirt S/S Crew Neck ACTIVE SPINE 2.0 Women's

The Odlo Women's Active Spine 2.0 running t-shirt combines advanced knitting technology with cutting-edge biomechanics to create a posture-enhancing running t-shirt that's more breathable than ever. Odlo's award winning Active Spine technology help to pull back the shoulders, enhancing your posture and in turn increasing oxygen intake and reducing muscle fatigue.

Up to 50%
off RRP
From £30.00 inc. VAT

Odlo

T-Shirt S/S Crew Neck ACTIVE SPINE 2.0

The Odlo Men's Active Spine 2.0 running t-shirt combines advanced knitting technology with cutting-edge biomechanics to create a posture-enhancing running t-shirt that's more breathable than ever. Odlo's award winning Active Spine technology help to pull back the shoulders, enhancing your posture and in turn increasing oxygen intake and reducing muscle fatigue.

Up to 50%
off RRP
From £30.00 inc. VAT

Raidlight

Activ MP+ Jacket

A comfortable, stretch waterproof jacket that is suitable for trail running and general outdoor use. The Activ MP+ jacket will give you protection from the elements when you need it. Designed to be both breathable and waterproof, the Raidlight Activ MP Jacket has been constructed using their signature MP+ membrane fabric. For nearly 20 years the MP+ membrane has been used by runners and outdoor enthusiasts and is renowned for its breathability, waterproofness, and durability.

Up to 50%
off RRP
From £67.50 inc. VAT

Raidlight

Arm Sleeves

Raidlight Arm Sleeves give you more versatility in your running outfit when paired with a short sleeve top. Being able to take on and off mid-run allows you to adjust to temperatures throughout the day or with changing altitude. The extended arms cover the backs and palms of hands, with a thumb loop to keep them in place, whilst featuring a watch flap to mitigate the faff of peeling back clothing to check the time (or your stats).

Up to 63%
off RRP
From £10.00 inc. VAT

Raidlight

Activ Tight W

The Women's Activ Tight from Raidlight is an all-rounder not to be overlooked! With stretchy material, it fits tight and has unparalleled comfort. It is made of a recycled lightweight polyester fabric that is quick drying. It also comes with a handy zip pocket at the back to keep valuables such as keys and money.

Up to 50%
off RRP
From £25.00 inc. VAT

Raidlight

Stretchlight Overtrousers

The Raidlight Stretchlight overtrousers focus on achieving minimum weight without compromising quality, weighing in at just 105g! This overtrouser offers all the comfort of the MP+® Stretchlight membrane (waterproof, highly breathable and 100% four-way stretch) making sure you can race in comfort in the rain!

Up to 50%
off RRP
From £45.00 inc. VAT

Raidlight

Performer SS Top

The Raidlight Performer SS Top is for use on any terrain... even Tarmac. With 2 different weights of Eco polyester fabric (made from post consumer recycled materials) it helps make the Performer Top very light and highly breathable. The design features 3 lower rear pockets, enabling you to carry additional items that don’t fit in your race vest, or for shorter runs, leave the bottle belt behind.

Up to 50%
off RRP
From £32.50 inc. VAT

Salt Stick

Fastchews

Salt Stick Fastchews are fast-absorbing, chewable electrolyte tablets designed to keep you hydrated, energized, and cramp-free. Perfect for athletes, outdoor workers and travellers, FastChews deliver a clean, science-backed blend of sodium, potassium, magnesium, calcium and chloride - the electrolytes that your body loses through sweat. The quick-dissolve formula absorbs 2–4x faster via the mouth’s lining, helping you combat heat stress and fatigue on the go. No sugar, no fillers, just rapid and reliable hydration wherever life takes you.

From £3.85 inc. VAT

Sidas

Run 3D Protect

The Sidas Run 3D Protect insoles are designed for runners looking for maximum comfort and protection in each stride! The gel at the heel provides exceptional absorption and the section on the front of the foot encourages energy return. These insoles have an anatomic shape ensuring your foot is supported, keeping your feet safe while you run!

From £28.37 inc. VAT
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