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.

Trail running sale

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.

Inov8InjinjiLa SportivaMontaneOriginal Mountain MarathonUltimate DirectionVJ-Sport
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Ultimate Performance

Race Number Magnets

The Ultimate Performance Race Number Magnets come as simple-to-use and secure pack of 4 magnets that will keep your race number in place. These handy lightweight magnets use strong magnetic connections to keep numbers in place, meaning no more pins or damage to your clothing!

From £10.69 inc. VAT

Tailwind

Endurance Fuel 30 Serving Pouch

Tailwind Endurance Fuel makes getting the right level of nutrition for long days training or racing simple. Tailwind offers complete energy, electrolyte and hydration in one simple drink, with a range of clean and light flavours to choose from. When mixed with water, Tailwind's glucose/sucrose fuel will take advantage of how your body absorbs fuel and maximise your intake of calories, all while being easy on the digestive system. Once in the bloodstream, Tailwind’s glucose fuel directly powers muscles, sparing precious glycogen stores and allowing you to go longer and at higher intensities without 'bonking'.

From £23.64 inc. VAT

Montane

Men's Featherlite Windproof Jacket

The Montane Men's Featherlite is a lightweight and packable windproof jacket for runners exploring windy trails. Great for fast and light activities, the Featherlite Jacket provides breathable wind protection for those fast-paced mountain days. It's been made using Wind Barrier Dynamic fabric which will protect you from any chilly gales and gusts, whilst still remaining light and packable to stow away when no longer needed. This is an excellent piece of kit for runners and fast packers.

Up to 41%
off RRP
From £52.99 inc. VAT

INOV8

Ultrapac Pro 2in1

The Inov8 Ultrapac Pro 2in1 running vest and hydration pack combines lightweight performance with expandable storage for ultimate versatility. Use it as a 5L vest for short runs or attach the 7L compartment to convert it into a 12L pack for long-distance trail runs or ultramarathons. Designed for comfort, it offers a bounce-free fit with stretch zones, multiple stash pockets, and comes with 2 x 500ml soft flasks and dual pole attachment options. Made with up to 100% recycled materials, it’s the perfect choice for eco-conscious runners needing reliable, adaptable gear.

Up to 25%
off RRP
From £89.99 inc. VAT

OMM Ltd

Ultra + Bottle 750ml Straw

The OMM Ltd Ultra + Bottle 750ml Straw has been built to keep you hydrated across long distances. Designed for performance, this bottle features a straw with OMM's large aperture bite valve for an excellent flow of water. This allows you to hydrate immediately without having to manually open or close any valves. The lid a bit valves are compatible across the OMM hydration range.

£10.00 inc. VAT £8.90 inc. VAT

OMM Ltd

Ultra Bottle 500ml with Bite Valve

The OMM Ltd Ultra Bottle 500ml Bite Valve is a water bottle that's been designed to perform. It features the OMM aperture bite valve which provides an excellent water flow rate, allowing you to immediately hydrate without having to manually open or close any valves. The bite valves can be interchanged with other bottles in the OMM hydration range.

£6.00 inc. VAT £5.34 inc. VAT

OMM Ltd

Leanweight Compressor Kit

The OMM Ltd Leanweight Compressor Kit is a mesh panel add-on for OMM running packs. The compressing mesh panel is suitable for stashing anything from helmets to your waterproofs or a drybag full of quick-access items. It fits to the outside of your OMM pack via multiple compression and attachment points on each side, ensuring even distribution. The stretch mesh allows the compressor to take shape over items for a secure carry.

£20.00 inc. VAT £17.82 inc. VAT

OMM Ltd

Trio Map Pouch

The OMM Ltd Trio Map Pouch is versatile pouch with an integrated map-carry system, designed to fit OMM race packs via the front harness. It can be worn either across the chest, or alternatively can be mounted in a lower position across the waist if preferred by the user. The Trio Map Pouch provides you with quick-access to essential items and has a fold out map pocket on the front, so you can map read and navigate whilst on the move.

£30.00 inc. VAT £26.72 inc. VAT

OMM Ltd

Ultra + Bottle 750ml with Bite Valve

The OMM Ltd Ultra + Bottle 750ml Bite Valve is drinks bottle for hydration across long distances. Designed for performance, the Ultra Bottle features a large bite valve for excellent water flow, allowing you to hydrate immediately without having to manually open or close any valves. The bite valve and lids are compatible across the OMM range.

£8.00 inc. VAT £7.13 inc. VAT

OMM Ltd

Go Pod

The OMM Ltd Go Pod is a handy pocket add-on that attaches to the shoulder strap of your OMM running pack. It will provide you with quick access to essential items that you may need whilst on the move and its compression cords allow you to cinch the top closed or compress the main body of the pouch, keeping the contents secure and stable. The multipurpose Go Pod is ideal for storing things like your water bottle, energy gels, snacks or a compass.

From £13.37 inc. VAT

OMM Ltd

Compressor Pod

The OMM Ltd Compressor Pod will add an extra 5 litres of storage to your race pack. This versatile compression system is ideal for storing quick grab items such as waterproofs or extra layers and is a useful way to separate your clean and dirt kit. The compression cord will increase your load's stability and reduce pack movement.

From £26.72 inc. VAT

OMM Ltd

Classic 25

The OMM Ltd Classic 25 is a durable, high-capacity running pack designed for long runs in tough terrain. Combining lightweight design with innovative features, it offers multiple pockets and attachment points for easy storage of race essentials like waterproofs, running poles and first aid kits. Ideal for mountain marathons and extended trail runs, this pack provides the perfect balance of comfort and functionality for outdoor athletes.

From £98.02 inc. VAT

OMM Ltd

Classic 18

The OMM Ltd Classic 18 was originally designed in 1973 by Olympian and London Marathon founder Sir Chris Brasher, it was the first lightweight backpack that focused on weight as a key feature. Perfect for mountain marathons like the OMM, it’s also ideal for endurance challenges like the MDS, UTMB, Spine Race, Dragon’s Back, Grand2Grand, 4 Deserts, Fire Ice Ultra or even Everest expeditions.

From £89.10 inc. VAT

OMM Ltd

MountainFire 15 Vest 2 x 350ml Flexi Flask

The OMM Ltd MountainFire 15 Vest (with 2x 350ml Flexi Flasks) is a running hydration vest with a roll-top closure, that has extra capacity suited for longer runs and adventures. It comes complete with two 350ml OMM Flexi Flasks to keep you hydrated on the move and has an additional sleeve to add a bladder if needed. The MountainFire 15 is perfect for events such like a 2-day mountain marathon, as it offers space to pack additional emergency kit such as extra layers, dry food and first aid.

Up to 28%
off RRP
From £89.99 inc. VAT

OMM Ltd

WaistBelt 6

The OMM Ltd WaistBelt 6 is the perfect companion for ultra-distance running challenges and mountain adventures. Designed with long runs in mind, this versatile waist pack offers ample storage for spare layers, food and drinks so you can cover more ground with fewer stops. Included with the WaistBelt 6 is a 500ml Ultra Bottle, conveniently placed in an easy-access pocket to keep you hydrated on the go. Whether you're tackling rugged trails or taking on endurance challenges, this running belt is built to help you perform at your best.

From £40.09 inc. VAT

OMM Ltd

Phantom 25

The OMM Phantom 25 is a high-capacity, lightweight vest pack that's been made with durable Cordura fabric, ensuring it stands up to tough conditions. Designed with stability and comfort in mind, its innovative 7-point harness system connects directly to your spine with a top yoke-style harness, offering unmatched balance and reducing movement. Combining the storage of a backpack with the easy access of a vest, the Phantom 25 is perfect for multi-day races and ultra challenges where stopping frequently to grab gear isn’t an option. Stay efficient and keep moving with this reliable adventure racing pack.

£200.00 inc. VAT £178.20 inc. VAT
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