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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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

OMM Ltd

Phantom 18

The OMM Ltd Phantom 18 is a lightweight and durable Cordura vest pack designed for adventure racing. Its compact 18L size features a unique 7-point harness and yoke-style design for ultimate stability and energy-efficient movement. With dual V-shaped anchors for a secure fit, it minimises bounce and swing on uneven terrain, making it perfect for runners seeking comfort and performance.

£160.00 inc. VAT £142.56 inc. VAT

OMM Ltd

Kamleika Overmitt

The OMM Ltd Kamleika Overmitts are waterproof running mitts designed to provide superior protection from the elements when the weather turns harsh. These versatile mitts can be worn directly on the skin or over another glove for added warmth and insulation. Crafted from the same stretchy, breathable, and waterproof fabric as the rest of the Kamleika range, they deliver unmatched protection in the most demanding weather conditions.

From £35.64 inc. VAT

OMM Ltd

Fusion Glove

The OMM Ltd Fusion Gloves are mid-weight running gloves designed for versatility and performance. Featuring a windproof back, silicone grips on the fingers for easy map handling and E-tips on the index fingers for smartphone compatibility, they offer a perfect balance of dexterity and warmth. The light fleece lining in the palms provides added warmth, while the windproof design protects you from the elements, making these gloves ideal for outdoor adventures and active use.

From £22.27 inc. VAT

OMM Ltd

Kamleika Cap

The OMM Ltd Kamleika Cap is a lightweight waterproof running hat designed for maximum performance. Crafted from a knitted stretch fabric with a breathable PU membrane, this cap provides superior temperature regulation and moisture management. Featuring 37.5 technology, the Kamleika Cap actively manages sweat and temperature, ensuring comfort in even the most challenging weather conditions. Tested by OMM competitors, this running hat is built to endure the toughest outdoor environments, making it the ideal choice for trail running, ultra-races and extreme endurance events.

From £26.72 inc. VAT

OMM Ltd

Breeze Cap

The OMM Ltd Breeze Cap is a lightweight and packable running cap that's been designed for outdoor activities like trail running and hiking. It offers UPF 30+ sun protection, as well as wind and water resistance for enhanced comfort on long hikes or runs. Weighing in at just 20g and packing down small, it’s easy to stash in your bag or pocket on exposed days in the mountains. Made with FLEXILE fabric, it provides a stretchy, pressure-free fit and remains comfortable under a helmet. Ideal for any outdoor adventure, the Breeze Cap delivers reliable sun protection and comfort in all weather.

Up to 30%
off RRP
From £17.50 inc. VAT

OMM Ltd

Halo Pant Women's

The OMM Ltd Women's Halo Pants are crafted to be lightweight for convenient storage in your pack, yet they deliver high performance when weather conditions change. These ultra-lightweight, breathable waterproof trousers can be packed down to the size of a tennis ball.

From £75.73 inc. VAT

OMM Ltd

Halo Pant

The OMM Ltd Halo Pants are ultra-lightweight, breathable waterproof trousers designed for athletes who need high performance in unpredictable weather. These packable overtrousers fold down to the size of a tennis ball, making them easy to carry without adding weight to your pack. Constructed with a 2-layer waterproof fabric and fully taped seams, the Halo Pants offer outstanding protection with a hydrostatic head of 10,000mm. Weighing just 80g and fully race compliant, they combine with the Halo Smock to create a full suit weighing only 175g, providing reliable performance when you need it most.

From £75.73 inc. VAT

OMM Ltd

Bearing Tee S/S Women's

The OMM Ltd Bearing Women's Short Sleeved Tee is a technical running top that's designed to keep you comfortable, even during high intensity activities and multi-day races. It uses four-way stretch Coolplus technology which offers maximum freedom of movement and effectively wicks sweat. It's also treated with Polygiene antibacterial and odour technology to keep you fresh and dry.

From £26.72 inc. VAT
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