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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Instinct Trail Running Reflex Belt

The Instinct Trail Running Reflex Belt provides you with hands-free storage for all your essentials without the need to wear an uncomfortable backpack or vest. The belt features six pockets with integrated race bib holders and reflective loops for arms-free enjoyment on the trails.

From £35.64 inc. VAT

Zone3 Race Belt with Neoprene Pouch

The Zone3 Race Belt with Neoprene Pouch is a great choice for runners, cyclists, triathletes and a wide range of other uses. This versatile belt offers storage and visibility on-the-move thanks to reflective bands. It's been made with adjustable elastic webbing and features a water resistant neoprene pouch and energy gel loops for extra support on those longer training sessions. There's also handy elastic toggles which will keep your race number secure.

£22.00 inc. VAT £19.76 inc. VAT

INOV8 Speed Cup 0.2

The INOV8 Speed Cup 0.2 has been designed for cup-less and plastic free race events. It's lightweight and super durable, weighing in at just 7 grams. It's also easy to roll up, fold and stash away in your belt or race vest pocket. Suitable for use with both hot and cold drinks, its reinforced brim and moulded thumb loop ensure stability whilst in use. Designed to last, it is easy to clean and dishwasher safe. 100% BPA and PVC free, the INOV8 Speed Cup 0.2 is a safe and reliable item on your kit list.

£10.00 inc. VAT

INOV8 Softflask 0.25

The INOV8 Softflask 0.25 is a compressible softflask designed to hold up to 250ml of water or gels. Squeeze to drink or eat contents and remove all air to reduce bounce.

£15.00 inc. VAT £13.37 inc. VAT

Zone3 Race Belt with Lycra Pouch

The Zone3 Race Belt with Lycra Pouch is a versatile product that offers storage and visibility on-the-move. Perfect for use by runners, cyclists, triathletes and for a wide range of other uses. Made with adjustable elastic webbing, each belt comes complete with a lightweight and expandable nylon pouch, reflective band for improved visibility, as well as handy energy gel loops for extra support on those longer runs and training sessions. There are also plastic toggles that will keep your race number in place should you choose to race in it.

£15.00 inc. VAT £13.48 inc. VAT

Chia Charge Flapjack

The Chia Charge Flapjacks have been made to help you perform better whilst still tasting great. These bars are based around the use of chia seeds to supply you with energy and protein, for use for your regular exercise routine, training sessions or endurance events. Chia Charge bars don't shy from the use of brown sugar or golden syrup, as they understand the importance of carbs for endurance activities. They use basic kitchen cupboard ingredients to create great tasting sports nutrition snacks, to keep you performing well.

From £2.20 inc. VAT

Darn Tough Women's Run No Show Tab No Cushion Ultra-Lightweight Running Sock

The Darn Tough Women's Run No Show Tab No Cushion Ultra-Lightweight Running Socks provide unbeatable blister protection and moisture-wicking performance. Designed with a minimalist approach, these socks stay in place, guard against dirt and deliver all-day comfort without adding bulk. Whether you're running on trails or pavement, these ultra-lightweight socks help you maintain your best pace, offering exceptional performance without distractions.

From £17.82 inc. VAT

Rab Women's Sonic Tee

The Rab Women’s Sonic Tee is a lightweight, quick-wicking and ultra-breathable technical tee, perfect for mountain running, fast hiking, and multi-day adventures. Made from soft Motiv™ Aero fabric with an odour control finish, it keeps you dry, comfortable, and fresh all day, moving seamlessly with your body thanks to Raglan sleeves and low-bulk seams, your go-to top for any trail.

From £31.09 inc. VAT

Rab Veil 12

The Rab Veil 12 is a lightweight running vest, boosted with extra storage to keep you fuelled, hydrated and prepared for long distance runs and whatever the mountains have in store. Ideal for ultramarathons and long-distance mountain runs, the Veil 12 feels worn rather than carried thanks to the Mono Mesh Chassis which provides support, reduces bounce and contours to your body, giving complete freedom of movement over bumpy terrain. It offers plenty of on-the-go hydration options with two 500ml soft flasks (included) incorporated into the front, as well as space for a 2L water bladder at the back.

From £130.08 inc. VAT

Lock Laces Lock Laces

Lock Laces are great for use with any shoes, from athletic to casual everyday wear. They are a one-size-fits-all elastic lace and each lace features a lock device and cord clip for securing once laced up. They come available in a variety of colours, including a reflective version for increased visibility in lower light conditions. We also have the boot version available, which are longer than the standard shoe laces, making them suitable for for all kinds of boots from low-cut hiking to military boots.

From £7.99 inc. VAT

Leki Ultratrail FX.One

The Leki Ultratrail FX.One is a premium, ultra-lightweight carbon trail running pole that features the innovative Trail Shark grip system. It's 30% lighter than its predecessor and optimized for fast and efficient movement on the trails. With quick-deploy folding, glove-like Shark Frame Straps, and a compact 36cm pack size, this pole delivers unmatched performance for runners seeking power, precision, and comfort across any terrain.

From £164.33 inc. VAT

Julbo Split

The Julbo Split sunglasses are engineered for optimal performance, boasting an ultralight design and sleek contours tailored to shield smaller faces. Utilising suspended lenses for enhanced lightness and ventilation, paired with slim CustomFIT temples featuring Grip Tech, these sunglasses ensure a secure and comfortable fit, even when worn under a helmet.

From £108.38 inc. VAT

Ultimate Direction FastpackHer 20 2.0

The Ultimate Direction FastpackHer 20 2.0 is a lightweight and durable running pack with a unique design that fits like a vest with water bottles up front, whilst distributing weight like a pack, allowing you to move fast and light on the trail. It features UD's Infiknit and FastFlow technologies, to increase the back panel's breathability and moisture wicking capabilities. This pack also has features plenty of dedicated external storage, a roll-top opening and a full-side external zipper for easy access to anything inside.

From £129.19 inc. VAT

OMM Ltd Core+ Hoodie Womens

The OMM Ltd Core+ Hoodie (Womens) delivers ultralight warmth and versatility for mountain running, winter layering, or everyday outdoor wear. Made with PrimaLoft® ACTIVE 125g/m² insulation, it offers the heat of fleece at half the weight, with excellent breathability and fast-drying performance. Designed to work wet or dry, it insulates even in challenging conditions and regulates temperature effortlessly when paired with a shell. A true valley-to-summit essential for active adventurers.

From £98.02 inc. VAT

Rab Sonic Ultra Vest Women's

The Rab Sonic Ultra Vest Women's is an ultralight, breathable, and fast-drying top designed for mountain running and fast hikes. Made with Motiv™ Aero fabric, its subtle mesh structure wicks moisture to keep you cool and dry, while laser-cut vent holes enhance airflow in heat zones. A racerback design, low-profile seams, and hydration pack-friendly fit ensure chafe-free comfort over long distances. Perfect for hot climates or layering at higher altitudes, this vest offers freedom of movement and all-day performance.

From £31.09 inc. VAT

Altra Men's Mont Blanc Carbon

The Altra Men's Mont Blanc Carbon are a fast trail shoe that feature a full-length carbon fibre plate, an upgraded midsole and sticky outsole that's ready to take on fast and technical terrains. They have a natural fit with a roomy toe box and zero low drop that's built to keep you comfortable and move the way you're designed to. The Vibram base and outsole provides unparalleled grip on both wet and dry surfaces, whilst their unique Altra EGO Pro midsoles add extra bounce to excel your speed and performance on the trails.

From £196.02 inc. VAT