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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Rab Veil XP 20

The Rab Veil XP 20 is an ultra-lightweight, waterproof trail running pack that will help you defy the elements on fast-paced pursuits in unpredictable conditions. It features a roll top closure with a side buckle option that allows the pack to expand and compress as your kit changes, while fully taped seams and waterproof fabric will protect your kit in all mountain conditions. Rab's 3D mesh back system makes long distance runs more comfortable and you can attach your running poles via the front of the harness or in the side sleeves. The Veil XP is built for adventurous runners and fast hikers on serious long-distance missions.

From £111.02 inc. VAT

Altra Women's Lone Peak 9+

The Altra Women's Lone Peak 9+ has been crafted for trail enthusiasts, equipped with a Vibram® Megagrip outsole that delivers outstanding traction on all terrains. Its enhanced midsole foam offers a responsive and comfortable ground feel, while durable no-sew overlays and a ripstop mesh upper withstand tough trails. Featuring Altra’s roomy toe box and Zero-to-Low Drop design, it encourages natural foot movement and long-lasting comfort. The Gaitertrap™ system prevents debris buildup, making this shoe perfect for high-mileage runs and challenging adventures.

Up to 25%
off RRP
From £97.50 inc. VAT

Altra Men's Lone Peak 9+

The Altra Men's Lone Peak 9+ has been crafted for trail enthusiasts, equipped with a Vibram® Megagrip outsole that delivers outstanding traction on all terrains. Its enhanced midsole foam offers a responsive and comfortable ground feel, while durable no-sew overlays and a ripstop mesh upper withstand tough trails. Featuring Altra’s roomy toe box and Zero-to-Low Drop design, it encourages natural foot movement and long-lasting comfort. The Gaitertrap™ system prevents debris buildup, making this shoe perfect for high-mileage runs and challenging adventures.

Up to 25%
off RRP
From £97.50 inc. VAT

Altra Trail Gaiter

The Altra Trail Gaiters are your ultimate shield against debris, ensuring nothing sneaks into your footwear while you run. Whether you're navigating through sand, snow, rocks, or leaves, these gaiters allow you to tackle tough terrains with ease, keeping pesky sticks and rocks at bay. Crafted from abrasion-resistant and highly breathable materials, they’ll elevate your trail running experience. With a strapless design that will fit trail shoes, you can switch shoes and socks without removing the gaiters. While they’re optimised for Altra GaiterTrap-equipped shoes, they will also work with most other trail footwear.

From £26.72 inc. VAT

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

The Darn Tough Women's Coolmax? Run No Show Tab Ultra-Lightweight Running Socks are an ultra-lightweight sock that effectively wick moisture and keep the air flowing for vegan-friendly feet, keeping you cool and dry and your strides blister-free. They feature yarns made using Coolmax technology which works to wick sweat and regulate your temperature, keeping your feet in their comfort zone for miles.

From £17.82 inc. VAT

SPORTTAPE Kinesiology Tape (K Tape)

SportTape Kinesiology Tape (K Tape) combines superior stretch, secure adhesion and skin-friendly comfort, making it the go-to for athletes and active individuals who need flexible support. Trusted by Olympians and World Champions since 2012, this flagship tape has been designed to move with muscles and joints, enhancing performance and aiding recovery. While not a miracle cure, K Tape is a powerful addition to a full rehab program. When used correctly, it can help relieve muscle pain, reduce inflammation, support tendons, improve body awareness and assist with posture, all to keep you moving confidently.

From £10.00 inc. VAT

Instinct Race Number Belt

Th3 Instinct Race Number Belt is a race-day essential, the Race Number Belt keeps your race number secure and visible, so you can focus on performing your best. Equipped with three spring-loaded toggles, it firmly holds your race number in place, even during intense movement. With reflective logos for added visibility and an adjustable, one-size-fits-all design, this belt combines practicality with comfort. The sturdy nylon buckle clip ensures a quick and reliable fit every time.

£10.00 inc. VAT

Injinji Halloween Crew

Get ready to add a dash of spooky fun to your run with the Injinji Halloween Crew Socks! Perfect for long-distance runs and tough hikes over rugged terrain, these themed toe socks not only look cool, but they’re also designed for peak performance. The individual toe design reduces friction, helping prevent blisters while allowing your toes to splay naturally, giving you better control on narrow, uneven trails. The crew length sits high to keep out debris, while an arch band provides extra support. Made with moisture-wicking COOLMAX® EcoMade fibres and breathable mesh, they keep your feet cool and dry, while durable nylon and mid-weight cushioning offer comfort and protection with every step.

From £16.93 inc. VAT

Injinji Halloween No-Show

The Injinji Halloween No-Show socks are a spooky twist on Injinji's lightest and most versatile running socks, perfect for all terrains and conditions. These socks feature Injinji's signature five-toe design, which helps prevent blisters by reducing friction and allows your toes to move naturally for a more responsive feel on uneven ground. Crafted with a soft and durable, seamless design, they offer a snug and secure fit. The breathable mesh top and COOLMAX® EcoMade fibres work together to keep your feet cool and dry, while an arch band provides extra support. With a no-show cut that sits below the ankle and a heel tab to prevent chafing and slipping, these socks are both functional and fun for your Halloween runs!

From £16.03 inc. VAT

Black Diamond Gridtech Storm Hood Gloves

The Black Diamond Gridtech Storm Hood Gloves are designed with a thermal insulating sleeve and include a stowable, waterproof hood for enhanced cold weather protection. Engineered for extended runs in harsh conditions, these gloves offer robust defence against the elements. The grid fleece construction ensures exceptional warmth while maintaining breathability, and the moisture-wicking properties keep your hands dry. For unexpected downpours or cold snaps, the gloves feature a stowable 3-layer waterproof hood made from 100% recycled nylon ripstop, providing an extra layer of protection when needed.

From £53.05 inc. VAT

Black Diamond UL Overmitts

The Black Diamond UL Overmitts are expertly crafted for fast and light expeditions in severe weather conditions. These ultra-lightweight mitts feature a 3-layer breathable recycled nylon shell that is both windproof and waterproof. Additionally, they are designed to pack down compactly, fitting easily into a small film case for convenient portability.

From £44.22 inc. VAT

Darn Tough Men's Run Quarter No Cushion Ultra-Lightweight Running Sock

The Darn Tough Men's Run Quarter No Cushion Ultra-Lightweight Running Socks are an ultra-lightweight merino wool sock that have been designed with running in mind. They feature breathable flex zones in the forefoot, silky next-to-skin ribbing and fatigue-zapping arch support that work together to keep you fresh and comfortable on the trail. Their performance fit mean no slipping, no bunching and most importantly, no blisters! So you can focus on your run and not your feet.

From £19.60 inc. VAT

Injinji Artist Designed Women's Crew

The Injinji Artist Designed Women’s Crew Socks perfectly blend trail performance and original artwork, so your socks can keep up with your adventures while showing off your style. Crafted with COOLMAX® EcoMade fibres, these socks wick away moisture to keep your feet cool and dry, while the blister-preventing toe sleeves give every toe its own space. Designed with a women’s-specific fit, they hug your feet for all-day comfort. And thanks to their crew-height coverage, you can say goodbye to pesky trail debris sneaking in.

From £16.93 inc. VAT

Injinji Artist Designed Men's Mini-Crew

High-performance, eco-conscious, and artist-inspired. Elevate your run or hike with the Injinji Artist Designed Men's Mini-Crew Socks, blending athletic functionality with exclusive, limited-edition art. Featuring COOLMAX® EcoMade fibres made from 100% recycled materials, these socks keep your feet cool and dry while supporting the planet. Designed to prevent blisters with midweight cushioning, they deliver a custom fit that combines exceptional performance with unique style.

From £16.03 inc. VAT

Injinji Artist Designed Women's Mini-Crew

Elevate your outdoor adventures with the Injinji Artist Designed Women’s Mini-Crew Socks, where vibrant design meets trail-ready performance. Created by talented artists within the outdoor community, each pair features exclusive, limited-edition prints to showcase your personal style. You can confidently tackle any terrain, knowing the blister-preventing toe sleeves and moisture-wicking COOLMAX® EcoMade fibres will keep your feet comfortable, dry, and protected. These socks are the perfect way to bring a touch of art to your next run, hike, or everyday journey.

From £16.03 inc. VAT

Injinji Artist Designed Men's Crew

Experience the perfect blend of high-performance gear and artistic expression with the Injinji Artist Designed Men's Crew Socks. Made using premium COOLMAX® EcoMade fibres to keep your feet cool and dry, no matter how tough the trail gets, and designed with individual toe sleeves, they actively prevent blisters and allow for natural toe splay, while the taller crew cuff confidently blocks out debris. As a limited-edition piece, you can showcase your unique style while enjoying superior comfort and protection on every run or hike.

From £16.93 inc. VAT
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