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.

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OMM Ltd

UltraFire 5 Vest

The OMM Ltd UltraFire 5 Vest is a lightweight, breathable, and secure running vest, perfect for trail runners, marathoners, and ultra-endurance athletes. It features a 5L weather-resistant roll-top compartment, 7 quick-access front pockets, and space for 2 500ml soft flasks, as well as a 2L bladder for hands-free hydration. The ergonomic, bounce-free design ensures stability without restricting breathing, while reflective details enhance visibility. Built with durable, stretch mesh fabric, the UltraFire 5 Vest will keep you comfortable and prepared on every run.

From £75.73 inc. VAT

OMM Ltd

TrailFire Vest

The OMM Ltd TrailFire Vest is a lightweight, high-performance running vest designed for speed and comfort on fast runs and races. Its ergonomic fit secures at the shoulders and diaphragm for unrestricted breathing, while stretch mesh minimizes bounce and keeps essentials close. With seven easy-access pockets and a rear mesh compartment for a hydration bladder or extra gear, it offers efficient storage without bulk. The vest supports multiple hydration options, fitting 2 x 500ml soft flasks up front and a 2L bladder in the back, with the option to expand capacity by 5L using the OMM Compressor Pod.

From £53.46 inc. VAT

OMM Ltd

Dyno Cap

The OMM Ltd Dyno Cap is a lightweight, packable running cap built for athletes and outdoor adventurers. Made from 4-way stretch Flexile Nylon with a DWR finish, it offers wind and water resistance, UPF 30 protection, and all-day comfort. The flexible peak shields against the elements and packs down easily into a pocket or vest. At just 35g, it delivers maximum performance with minimal bulk, perfect for mountain trails and summer adventures.

From £26.72 inc. VAT

OMM Ltd

Nitro Tee S/S

The OMM Ltd Nitro Tee S/S is an ultra-light, super-fast drying performance base layer designed for trail running, road running, and ultra-distance adventures. Made from 4-way stretch nylon, it delivers a barely-there feel, wicking moisture and drying quickly to keep you cool in warm conditions. With near-zero insulation and high air permeability, it sheds heat even during intense efforts, while the soft, closely woven fabric ensures next-to-skin comfort and easy layering in cooler weather. Lightweight, breathable, and designed for peak performance, the Nitro Tee is perfect for runners who want comfort without extra weight.

From £40.09 inc. VAT

OMM Ltd

Dyno Shorts (W)

The OMM Dyno Shorts (Women's) deliver premium comfort and performance for runners. Featuring a bonded, stitch-free design to reduce friction, they offer a lightweight and breathable fit with 4-way stretch for full mobility. The 6” inseam shell is wind and water-resistant, while the moisture-wicking, quick-drying liner ensures chafe-free support on long runs. An extra-wide waistband, secure zip pocket, and athletic fit make them perfect for training, racing, and trail running.

From £62.36 inc. VAT

OMM Ltd

Dyno Shorts

The OMM Dyno Shorts deliver premium comfort and performance for runners. Featuring a bonded, stitch-free design to reduce friction, they offer a lightweight and breathable fit with 4-way stretch for full mobility. The 6” inseam shell is wind and water-resistant, while the moisture-wicking, quick-drying liner ensures chafe-free support on long runs. An extra-wide waistband, secure zip pocket, and athletic fit make them perfect for training, racing, and trail running.

From £62.36 inc. VAT

OMM Ltd

Rotor Vest

The OMM Ltd Rotor Vest delivers exceptional warmth-to-weight performance with PrimaLoft® Gold with Cross Core insulation. Weighing just 128g, it’s perfect for layering in cold conditions or throwing on at summits. The wind and water-resistant shell protects against the elements, while the mesh-backed stuff pocket doubles as a vent. Highly packable, it folds into its own pocket for easy storage. Designed for the toughest conditions, this vest offers lightweight warmth, breathability, and protection without bulk - ideal for fast-moving adventures.

From £98.02 inc. VAT

OMM Ltd

Ultra Flexi Flask 350ml with Bite Valve

The OMM Ltd Ultra Flexi Flask 350ml with Bite Valve is a lightweight, collapsible soft flask that compresses as you drink, reducing sloshing and suction effort for a smoother flow. Made from durable TPU with extra grip, it’s easy to squeeze for gels or liquids and features a leakproof bite valve to prevent spills. The wide opening allows for quick filling and cleaning, while the interchangeable straw option adds versatility. BPA, PVC, and phthalate-free, this compact, easy-to-store flask is perfect for runners, hikers, and endurance athletes.

£15.00 inc. VAT £13.37 inc. VAT

OMM Ltd

Ultra Flexi Flask 500ml with Bite Valve

The OMM Ultra Flexi Flask 500ml is a lightweight, collapsible soft flask designed for effortless hydration on the move. Made from durable TPU with extra grip, it compresses as you drink, reducing sloshing and suction effort for a smoother flow. The wide opening allows for easy filling and cleaning, while the leakproof bite valve ensures no spills. With an interchangeable straw option, it’s perfect for runners, hikers, and endurance athletes. BPA, PVC, and phthalate-free, this slim, flexible, and easy-to-store flask keeps you hydrated without extra bulk.

£16.00 inc. VAT £14.26 inc. VAT

OMM Ltd

Ultra Flexi Flask 250ml with Bite Valve

The OMM Ltd Ultra Flexi Flask 250ml with Bite Valve is a lightweight, compact, and flexible hydration solution designed for runners and fast-moving adventurers. Made from durable thermoplastic polyurethane (TPU), it compresses as you drink, eliminating sloshing and reducing effort. The wide opening ensures easy filling and cleaning, while the secure bite valve prevents leaks. Slim, squeezable, and BPA, PVC, and phthalate-free, it’s perfect for hydrating on the go with both water and gels.

£12.00 inc. VAT £10.69 inc. VAT

OMM Ltd

Z-Lite Poles - Alloy

The OMM Ltd Z-Lite Poles (alloy) are lightweight, compact, and built for ultra-distance racing, mountain marathons, and fastpacking adventures. Made from aircraft-grade aluminum for the best strength-to-weight ratio, they feature an ergonomic EVA foam grip, shaped webbing wrist strap, and a low-profile basket for stability on technical terrain. The 4-section fixed-length design folds down for easy packing, while colour-coded straps help identify the right size. Whether tackling multi-day races, long-distance trails, or setting up a bivvy, these poles provide reliable support, energy return, and ultimate durability, making them an essential adventure companion.

From £62.36 inc. VAT

Fenix

HL18R-T V2.0

The Fenix HL18R-T V2.0 is a lightweight, rechargeable trail running headlamp designed for runners, hikers, and outdoor adventurers looking for versatile lighting and long-lasting performance. Featuring dual primary beams, it offers a white beam for clear visibility and a warm-white beam to cut through mist and fog, plus two red LEDs to preserve night vision. The SPORT bi-directional rotary headband system allows quick tension adjustments, and a built-in safety whistle adds extra security. Powered by a 1900mAh Li-poly battery with USB-C charging, it delivers up to 500 lumens and can also run on AAA batteries. A sliding lock switch prevents accidental activation, and the breathable, reflective headband ensures comfort and visibility. Compact, durable, and weather-resistant, the HL18R-T V2.0 is built to perform on the toughest trails.

£62.95 inc. VAT £56.09 inc. VAT

Altra

Women's Timp 5 Boa

The Altra Women's Timp 5 BOA® is a high-performance trail running shoe designed for precision fit, superior grip, and plush cushioning. Featuring the BOA® PerformFit™ Wrap System, it allows for on-the-go micro-adjustments, ensuring a secure, customized fit throughout your run. The Vibram® Megagrip outsole provides exceptional traction on wet and dry terrain, while the Altra EGO™ MAX midsole offers a responsive, cushioned ride with extra bounce. Designed with zero drop and a roomy FootShape™ toe box, it promotes natural movement and stability, making it perfect for tackling rugged trails, jumping rocks, and pushing your limits. Dial in your fit, hit the trails, and run without boundaries.

From £138.11 inc. VAT

Scarpa

Golden Gate 2 ATR WMN

The Scarpa Golden Gate 2 ATR WMN is a versatile home-to-trail running shoe, designed for medium to long distances with enhanced comfort, durability, and energy return. Featuring a breathable, durable mesh upper, Bounce Foam midsole for a responsive feel, and the I-Respond outsole for a smoother, more efficient stride, it’s ideal for runners of all weights and experience levels. With Scarpa's ACS (Active Cushioning System) for superior underfoot comfort, this shoe is perfect for daily training, park runs, and transitioning from road to trail with ease.

From £130.32 inc. VAT

Scarpa

Golden Gate 2 ATR

The Scarpa Golden Gate 2 ATR is a versatile home-to-trail running shoe, designed for medium to long distances with enhanced comfort, durability, and energy return. Featuring a breathable, durable mesh upper, Bounce Foam midsole for a responsive feel, and the I-Respond outsole for a smoother, more efficient stride, it’s ideal for runners of all weights and experience levels. With Scarpa's ACS (Active Cushioning System) for superior underfoot comfort, this shoe is perfect for daily training, park runs, and transitioning from road to trail with ease.

From £130.32 inc. VAT

Scarpa

Ribelle Run 2

The Scarpa Ribelle Run 2 is a high-performance trail running shoe built to provide precision, adaptability, and full support on technical terrains. Featuring the new 3S Frame (Secure, Stable, Sensitive), it wraps the foot for unmatched stability and protection on short to medium-distance trails and skyruns. Lightweight and responsive, it’s ideal for athletes seeking agility and control on rugged surfaces. Plus, it's vegan-friendly, made entirely from synthetic materials with no animal testing.

From £143.80 inc. VAT
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