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 Ultra Run Mini-Crew

New
From £17.82 inc. VAT

Fenix HM65R-T V2.0 Trail Runner & ED4R Seasonal Offer

New
£110.95 inc. VAT £102.82 inc. VAT

Instinct Endurance Cap

New
From £22.27 inc. VAT

Instinct Leg Sleeves

The Instinct Leg Sleeves are lightweight, packable running leg warmers that turn shorts into tights in seconds. Their seamless design offers second-skin comfort, while quick-drying, temperature-regulating fabric helps manage moisture and odour. Ideal for trail running, ultra races and long-distance adventures where versatility and low weight matter.

New
From £35.64 inc. VAT

Instinct Arm Sleeves

The Instinct Arm Sleeves offer lightweight, seamless comfort for running and endurance sports. Made with high-performance fibres and castor bean-derived bio-based filaments, they provide temperature regulation, quick-drying performance and odour control.

New
From £22.27 inc. VAT

Instinct Spork 3 - in - 1

The Instinct Spork 3-in-1 is a lightweight utensil designed for hiking, trail running, travel and outdoor adventures. Combining a spoon, fork and knife in one compact design, it saves space in your backpack while providing everything you need for meals on the go. Made from BPA-free and phthalate-free polypropylene, this reusable spork is a practical alternative to disposable cutlery. Weighing just 7g, it is an ideal addition to any lightweight camping or outdoor kit.

New
£3.00 inc. VAT

Instinct Soft Cup Beer

The Instinct Soft Cup Beer is a reusable 220ml soft drinking cup designed for trail running, hiking, camping and endurance races. Its lightweight 8g design makes it easy to carry in a running vest or backpack without taking up much space. Made from flexible TPU, this collapsible-style cup is suitable for cold and warm drinks up to 60°C. BPA-free, PVC-free and phthalate-free, it offers a practical alternative to disposable race cups and outdoor drinking containers.

New
£8.00 inc. VAT

Instinct Collapsible Bowl 400

The Instinct Collapsible Bowl 400 is a compact and reusable bowl designed for long races, backpacking and outdoor adventures. Its 400ml capacity is ideal for meals and drinks on the trail, while the foldable design packs down to just 13mm thick to save space in your bag. Made from silicone and ABS, it is BPA-free, phthalate-free and suitable for temperatures from -10°C to 100°C. This lightweight, top-rack dishwasher-safe bowl is a practical choice for outdoor enthusiasts looking for convenient and reusable kit.

New
£8.00 inc. VAT

Instinct Ergo Quiver II

The Instinct Ergo Quiver II is a lightweight running pole holder designed for trail running, ultra-distance races and mountain adventures. Its double quiver system keeps poles securely separated and helps distribute weight evenly for improved balance and comfort. Quick-access storage makes it easier to take poles out and put them away while on the move, without unnecessary stops. Made from durable nylon Spectra ripstop fabric with padded EVA backing, it weighs just 72g and helps reduce pole bouncing and noise during demanding runs.

New
£45.00 inc. VAT £40.09 inc. VAT

Instinct Ergo Quiver I

The Instinct Ergo Quiver I is a lightweight 40g running pole holder designed for trail running, mountain running and ultra-distance adventures. It carries one pair of poles securely, with a quick-access opening that makes storing and removing poles simple while on the move. Durable Spectra ripstop nylon, EVA back padding and a secure lower cord system make it a practical choice for demanding outdoor runs.

New
£35.00 inc. VAT £31.19 inc. VAT

Instinct Gel Cell 150ml

The Instinct Gel Cell 150ml is a reusable energy gel flask for trail running, marathons, ultra running and long-distance cycling. This lightweight 25g soft flask holds around 5 to 6 energy gels, giving you quick access to your sports nutrition without carrying multiple sachets. Its compressible body and high-flow nozzle make on-the-go fuelling simple, while the secure cap helps prevent leaks. Dishwasher safe and made from BPA-, PVC- and phthalate-free materials, it is a convenient way to simplify race fuelling and reduce packaging waste.

New
£12.00 inc. VAT £10.69 inc. VAT

Instinct Evolution 7L

The Instinct Evolution 7L Running Vest is a lightweight and breathable pack designed for trail running from 20km to ultra-distance races. Weighing just 210g, it offers practical storage for hydration, food, poles and essential gear without adding unnecessary bulk. Multiple easy-access pockets keep your essentials within reach, while adjustable chest straps and elastic side lacing provide a secure fit. Compatible with soft flasks, bottles and a 1.5L hydration bladder, it is ideal for runners looking for comfort, flexibility and performance on the trail.

From £111.37 inc. VAT

Instinct X - 10L

The Instinct X 10L Running Vest is a lightweight, breathable pack designed for trail running, ultra-distance racing and long training sessions. Its 10L capacity provides plenty of space for hydration, food, clothing and essential gear. Multiple front and rear pockets allow quick access to everything you need without removing the vest. Adjustable chest straps and elastic side lacing provide a secure and comfortable fit, while flexible hydration and pole-carrying options make it a versatile choice for demanding trail runs.

From £125.45 inc. VAT

OMM Ltd Core Arm Warmers

The OMM Ltd Core Arm Warmers provide lightweight warmth for running and outdoor adventures. Made with PrimaLoft® ACTIVE insulation, they are stretchy, breathable and quick-drying. The four-way stretch fabric allows comfortable movement, while the lightweight 35g design makes them easy to carry. Ideal for adding warmth when temperatures drop, they can be quickly removed and packed away when no longer needed.

From £35.64 inc. VAT

Instinct Eklipse 12L

The Instinct Eklipse 12L is a lightweight trail running vest designed for ultra running, long-distance races and trail adventures. With 12 litres of storage and a weight of just 380g, it has plenty of space for water, food, clothing and essential kit. Easy-access pockets, breathable mesh and an adjustable fit help keep you comfortable throughout your run. With water-resistant storage and four pole carrying options, the Eklipse 12L is a great choice for trail running, ultra racing and trekking.

From £138.11 inc. VAT

Ultimate Direction Body Bottle 460 Insulated

The Ultimate Direction Body Bottle 460 Insulated is a lightweight and flexible hydration bottle with a 460ml capacity. Its insulated design helps keep drinks cold in summer and warm in winter, maintaining temperature for more than twice as long as a standard Body Bottle II 500. The leak-proof design features a drinking spout and an easy-grip screw cap for convenient use. It shrinks as you drink and fits all Ultimate Direction vests, Vestas and waistbelts, making it ideal for running and outdoor adventures.

£30.00 inc. VAT £26.98 inc. VAT
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