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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Tailwind Endurance Fuel 50 Serving Pouch

Tailwind Endurance Fuel (50 Serving Pouch) blends clean, easily absorbed calories, complete electrolytes, and hydration support into one light-tasting drink. Designed for endurance athletes, it keeps you energised, hydrated, and gut-happy without gels or pills. Vegan, gluten free, and mixes easily for all-day adventures.

From £35.59 inc. VAT

Tailwind High Carb Fuel

Tailwind High Carb Fuel is a powerful endurance drink mix packed with 90g of carbs in a 2:1 glucose to fructose ratio, plus complete electrolytes. Designed for high-intensity efforts, it delivers more energy per sip, reduces perceived exertion, and speeds recovery. Easy to mix, clean-tasting, and vegan, no gels or salt pills needed.

From £3.20 inc. VAT

Tailwind Recovery Mix

Refuel, rebuild, and rehydrate with Tailwind Recovery Mix. This vegan, dairy-free post-workout drink blends complete protein, fast carbs, healthy fats, and electrolytes to help restore glycogen, repair muscle, and keep you hydrated, no milk needed. Just mix with water and recover right, so you’re ready to tackle tomorrow’s challenge.

From £3.25 inc. VAT

Fixx Nutrition Fuel X Pro

Stay strong from start to finish with Fixx Nutrition Fuel X Pro, a clean and gut-friendly endurance drink mix designed for athletes who go the distance. Packed with carbohydrates, electrolytes, and essential amino acids, it delivers steady energy and supports muscle performance during your longest sessions. The easy-on-the-stomach formula means no digestive issues, so you can focus on pushing your limits. Whether you’re running, cycling, or tackling ultra events, Fuel X Pro keeps you fuelled and hydrated without weighing you down.

From £2.60 inc. VAT

Voom Nutrition Pocket Rocket - Electro Energy

The VOOM Nutrition Pocket Rocket Electro Energy bar delivers twice the energy of a gel with 45g carbs, 120mg electrolytes and B-vitamins in a melt-in-your-mouth bar that fuels muscles, aids hydration and prevents cramp, ideal for endurance athletes wanting rapid and stomach-friendly energy.

£1.50 inc. VAT

Voom Nutrition Recover Fudge

VOOM Recover Fudge is a delicious salted caramel recovery bar, packed with 12g whey isolate protein and a 3:1 carb-protein ratio to speed muscle repair, fight DOMS and refuel your body after exercise. Enjoy it anywhere, it’s the perfect no-fuss solution for a post-workout boost.

£2.89 inc. VAT

Altra Women's Experience Wild 2

The Altra Women’s Experience Wild 2 is a lightweight, high-cushion trail shoe designed for smooth and natural movement over any terrain. Featuring a breathable mesh upper, MaxTrac™ outsole, and a 4mm drop with rocker geometry, it offers secure traction, a roomy toe box, and comfort that lasts all day, perfect for trail runners and hikers alike.

Up to 30%
off RRP
From £91.00 inc. VAT

Mac In A Sac Speedpro Backpack

The Mac in a Sac SpeedPro Backpack is a lightweight, waterproof 20L running pack built for endurance athletes and trail runners. With a 5,000mm waterproof rating, fully taped seams, and ergonomic, bounce-free design, it provides secure storage and quick hydration access with dual bottle pouches. Reflective detailing, adjustable sternum straps, and multiple pockets make this pack perfect for ultra marathons, wet-weather training, or fastpacking adventures.

£59.99 inc. VAT £51.91 inc. VAT

Injinji Run Ultra Crew

The Injinji Ultra Run Crew Socks offer impact-absorbing cushioning, blister prevention, and moisture-wicking comfort. Ideal for road or trail running with a secure crew fit and breathable mesh top. Perfect for long runs and tough terrain.

From £17.82 inc. VAT

Odlo Women's Essential 365 T-Shirt

The Odlo Women’s Active 365 T-Shirt is a lightweight and breathable performance tee made from 92% recycled polyester and 8% elastane for superior stretch and comfort. Designed for high-intensity workouts like running, training, and gym sessions, it features moisture-wicking fabric and ZeroScent® technology to fight odours and keep you fresh. With a flattering athletic fit and modern colour options, this eco-friendly t-shirt combines style, performance, and sustainability for all-season wear.

Up to 30%
off RRP
From £26.25 inc. VAT

Bearhug Knee Support

The Bearhug Knee Support Sleeve is a Class 1 medical device designed to reduce knee pain, prevent injury, and support recovery. Made with dual-layer compression fabric and an anti-roll silicone band, it offers medical-grade compression that stays in place, ideal for running, gym workouts, football, hiking, cycling, and more. Whether you're recovering from arthritis, tendonitis, or protecting against ACL/MCL strain, this durable knee sleeve boosts circulation, reduces inflammation, and helps you move with confidence.

From £24.94 inc. VAT

Odlo Performance X-Light Pack Cap

Stay cool and move light with the Odlo Performance X-Light Pack Cap. Designed for runners, hikers, and outdoor athletes, this ultra-lightweight, breathable cap features high-stretch fabric, a packable design, and an adjustable fit. Perfect for warm-weather training, it folds easily into a waist belt or pack, making it your go-to cap for every adventure.

From £26.72 inc. VAT

Ultimate Direction Fastpackher 30 2.0

The Ultimate Direction Fastpackher 30 2.0 is a lightweight, durable trail and backcountry backpack designed for fast, efficient movement. It combines the comfort of a vest-style fit with front water bottle access and the support of a traditional pack. Upgraded with Infiknit and FastFlow technology, it offers excellent breathability and moisture wicking for all-day comfort. With a roll-top closure, full-side zipper, and multiple external storage options, it’s perfect for hikers, runners, and adventurers who need quick access to gear. Ideal for women seeking performance, versatility, and comfort on the trail.

From £147.01 inc. VAT

Ultimate Direction Ultra Vest

The Ultimate Direction Ultra Vest is a lightweight and breathable hydration vest that's been designed for long-distance comfort and performance. Made with soft recycled monomesh and stretch mesh panels for a secure, ergonomic fit, this unisex running vest includes two HydraPak Body Bottle 500s, multiple water-resistant pockets, and customizable trekking pole carry. Features like bounce-free sternum straps, reflective details, glove-friendly zippers, and a reservoir-compatible sleeve make it the perfect ultra running vest for endurance athletes. Ideal for men and women, available in a full range of sizes.

From £124.74 inc. VAT

Ultimate Direction Quiver

The Ultimate Direction Quiver is a lightweight, high-performance trekking pole holder designed for trail runners who value speed, convenience, and secure gear storage. Compatible with UD Xodus, Race, and Ultra Vests, it offers flexible carry options while its structured opening allows quick, hassle-free access. Built to fit most trekking poles, this durable quiver ensures a bounce-free run, making it the ideal accessory for any distance or terrain.

£30.00 inc. VAT £26.72 inc. VAT

Ultimate Direction The Classic

The Ultimate Direction The Classic is a lightweight and breathable hat designed for trail runners who train in warm weather and varying light conditions. Crafted with performance and convenience in mind, this hat features perforated panels for exceptional airflow, a reflective strip for enhanced visibility in low-light conditions, and an easy-to-use cordlock adjuster for a custom fit on the go. When not in use, it stows away effortlessly - perfect for runners who value versatility.

From £31.19 inc. VAT
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