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Inov8 Trailroc 255 Trail Running Shoes

rrp £109.99
SAVE £45.00

The INOV-8 Trailroc 255 Trail Running Shoe is designed for the loose runner, on rugged trails. This trail shoe includes great foot protection and cushioning which makes it suitable for high mileage runners and various terrain running also. With a 6mm drop from heel to toe, these offer more support than the Trailroc 245 and are 10g heavier.more

Inov8 Trailroc 255 Trail Running Shoes

The INOV8 Trailroc 255 Trail Running Shoe features the ever-popular trailroc outsole. This 255g model provides a light shoe underfoot for increased speed and flexibility but still maintains a natural, form-fitting shoe.

A Shoc-Zone technology is included in the design of the shoe, giving you a 6mm heel ridge which improves your efficiency as a runner. It also features Meta-Shank™ Gen3 for increased underfoot protection.

  • Weight - 255 grams.
  • Injected EVA Injection - For comfort and a soft feel under your feet.
  • Natural Fit - A greater anatomical fit allows greater room in the front of the foot for comfort and movement.
  • Shoc-Zone™ - A 6mm Differential gives you the best of both worlds; A lower heel ridge to keep you closer to the ground to maximise your running efficiency with the essential minimal protection.
  • Trailroc - A design specific to the INOV8 range that ensures great traction and support underfoot.
  • Support - The Meta-Shank™ Gen3 is utilised to enhance greater underfoot protection.

Show More...




Performance Uppers

Quick drying mesh uppers give high breathability. Met-Cradle webbing secures 1st & 5th metatarsal in natural position, firmly holding forefoot in place while maintaining natural metatarsal alignment.


Direct Underfoot Comfort

Standard 6mm or 3mm interchangeable footbed with rebound inserts for fine tuning and comfort.


Optimum Cushion

Moulded cupped MidShoc midsole provides the best balance between comfort and underfoot sensitivity.


Meta-shank patent pending

Moulded stiffener with META-FLEX grooves allows metatarsals to take their natural alignment when contouring.


Ultimate Grip

Our specially designed outsoles use both our endurance compound and our unique inov-8 sticky rubber compound for extra performance and grip on race day.

For technical footwear a good fit is essential to enhance your performance while running. This is achieved through combining the key elements such as the last and the lacing system. Inov-8 have developed several lasts modelled around the actual shape of a foot, ensuring a secure heel hold while allowing the forefoot to assume a natural unrestricted position throughout the complete running cycle.


Performance Last

Precise fitting last ensures minimal internal movement when contouring, ascending and descending.


Endurance Last

Generous fitting last offering a comfortable fit. Ideal comfort for training and long distances.

All our shoes give the option for high front lacing which is designed to ensure a good heel hold. This in conjunction with our low heel cut gives the ankle joint a larger range of motion and less pressure on the Achilles heel.


Webbing upper support

Lacing attached to nylon webbing, cradles and secures the upper behind the metatarsal heads.


TPU lacing

Upper support Lacing attached to polymer upper supports, cradles the foot more evenly.


Structure lacing upper support

Lacing attached to synthetic upper cradles and distributes pressure across the metatarsals.


Meta-flex (registered design)

All our footwear incorporates a meta-flex groove which is anatomically aligned in front of the metatarsal heads to provide a natural fore foot flex.


Meta-shank (patent pending)

New 5-finger meta-shank aligns with each individual metatarsal for greater flexibility when contouring while retaining underfoot impact protection.


Terra-shank (registered design)

Polymer shank positioned behind the metatarsal heads providing underfoot protection and extra stability primarily for additional support on longer adventures.


Dual Density Posting

The dual density midsole as featured on the flyroc 310 (flyroc 284 W's), roclite 320, terroc 330 (terroc 308 W’s), and roclite 390 GTX has a dense posting on the medial and lateral side leaving a channel down the centre of the shoe to aid flexibility and movement while keeping the shoe neutral. The posting is an aid towards preventing supination and over-pronation.


Bi-Planar registered design

Sole design whereby the heel section is curved in two planes aligning with the natural curvature of the heel. This provides a more natural and earlier heel strike to aid descending and contouring.


Met-cradle (registered design)

The upper webbing support in our footwear is anatomically positioned to cradle the fore foot behind the metatarsal heads and provide a secure foot hold.


Our range of products give runners a choice of midsole cushioning denoted by an arrow system moulded into the midsoles.



One of the most important elements of runner’s footwear is the weight. Our footwear is some of the lightest in the market and to show this we use a unique naming system based on the outsole name and the weight of an average size UK8 shoe. E.g. a Flyroc 310 is built on the Flyroc sole unit and the shoe weighs about 310gms.


Some of our shoes use our exclusive ‘sticky’ rubber compound which has been specially developed using climbing rubber technology. This rubber optimizes grip in wet conditions, however the trade off is it wears down quicker.


Our endurance rubber compound has been formulated for an optimal balance on wear and mixed terrain grip.


Our translucent outsole as used on most of the PK models uses a non-marking rubber compound.


Detailed Description:

GORE-TEX Footwear is ideal for a wide range of outdoor activities. It offers a unique combination of durable waterproof protection, breathability and the utmost in comfort. GORE-TEX Footwear enables you to enjoy your outdoor activities to the fullest, regardless of the weather conditions.


GORE-TEX Footwear with XCR Product Technology:

  • A high-tech solution for running shoes that keeps you at least one step ahead of the competition.
  • Durably waterproof and extremely breathable.
  • Optimized climate control in all weathers and even during strenuous physical activity.


Key Infomation:

High-tech for your feet. The GORE-TEX membrane is the heart of GORE-TEX Footwear. It is completely waterproof but permeable for water vapor. The result: Water from the outside will never penetrate and perspiration can escape easily. This is why your feet always stay dry and comfortable in GORE-TEX Footwear.

gstar gstar gstar gstar gstar   Overall Rating: 4.75 / 5 stars, based on 24 reviews
gstar gstar gstar gstar gstar
- on 2014-10-10 17:37:46
"Super comfy, I walked around in them for two days then ran 11 miles on and off road and my feet were fine. I had good grip off road and they were comfy running on road."
gstar gstar gstar gstar gstar
- on 2014-08-27 16:13:08
"the service is excellent. This is why I have made so many orders from them"
gstar gstar gstar gstar gstar
- on 2014-08-25 21:13:00
"Very happy with the product."
gstar gstar gstar gstar gstar
- on 2014-08-02 11:53:12
"Best thing i ever bought. I bought these for tough mudder in yorkshire. It was the hilliest event and these trainers worked superbly. Would highly recommend them to anybody. Grip is ace"
gstar gstar gstar gstar gstar
- on 2014-07-15 07:50:55
"Very fast service, quick and helpful when shoes returned because I ordered the wrong size."
gstar gstar gstar gstar gstar
- on 2014-07-09 08:59:37
"first time out at the weekend. Extremely comfortable and light with good grip on all wet sufaces. Looking forward to using them again this weekend."
gstar gstar gstar gstar gstar
- on 2014-04-25 14:37:08
"Great service again"
gstar gstar gstar gstar gstar
- on 2014-04-17 19:41:34
"Very pleased with these. Not as grippy as Roclites, but protect the feet better on stony tracks. I ran a 33 miler in them about a week after they arrived and had no blisters or blue toenails. Quite wide in the toe box compared with some Inov-8 shoes. A bit smaller in length than the Roclite 243, but not so much that I needed a different size."
gstar gstar gstar gstar gstar
- on 2014-04-08 09:58:09
"Great shoes as all Inov-8."
gstar gstar gstar gstar grstar
- on 2014-02-20 10:08:16
"tres bonne marque de running"
gstar gstar gstar gstar grstar
- on 2014-02-15 17:12:53
"Awesome, as hard as I need"
gstar gstar gstar gstar gstar
- on 2014-01-31 10:17:10
"I run trails whole year 2013 with this shoes and buy it again. That tells it all."
gstar gstar gstar gstar grstar
- on 2014-01-22 20:42:25
"Grip is not quite as good as I'd hoped but a well made and very comfortable shoe."
gstar gstar gstar gstar grstar
- on 2014-01-15 11:57:39
"Needs more cushioning. Doesn't transition well to the road when you have to....overall good on trails only."
gstar gstar gstar gstar grstar
- on 2014-01-09 10:35:43
"One run so far, sturdy yet light, get feeling will be a great shoe for the dryer and less aggressive trails of my area"
gstar gstar gstar gstar gstar
- on 2013-11-19 14:13:26
"I'm still getting used to toe striking but these are a great intermediate to help learn."
gstar gstar gstar gstar gstar
- on 2013-11-08 14:17:15
"The must"
gstar gstar gstar gstar gstar
- on 2013-08-17 06:37:16
"They look good and feel good."
gstar gstar gstar gstar gstar
- on 2013-06-06 12:46:51
"Very comfy, good laces and lacing, enough room to splay toes but still feel secure on uneven sloped ground, and dry quickly. Will have to wait and see how they wear but so far impressive!"
gstar gstar gstar gstar gstar
- on 2013-05-10 10:10:00
"Best trail running shoe I've ever ran in. Ran a 57 km ultra in it, remained comfortable till the finish line. Perfect for our Maltese terrain."
gstar gstar gstar gstar gstar
- on 2013-01-27 13:24:42
"Very efficient. Good choice of stock in large sizes."

Product Size Comparision Guide

Inov8 Trailroc 255 Trail Running Shoes

3 4 35.5
3.5 4.5 36
4 5 37
4.5 5.5 37.5
5 6 38
5.5 6.5 38.5
6 7 39.5
6.5 7.5 40
7 8 40.5
7.5 8.5 41.5
8 9 42
8.5 9.5 42.5
9 10 43
9.5 10.5 44
10 11 44.5
10.5 11.5 45
11 12 45.5
11.5 12.5 46.5
12 13 47
13 13 48
14 15 50

Manufacturer's Size Guide





UK 1 - 2 3 - 4 5 - 6 7 - 8 9 - 10 11 - 12
EU 33 - 34.5 35.5 - 37 38 - 39.5 40.5 - 42.5 43 - 44.5 45.5 - 47
US 2 - 3 4 - 5 6 - 7 8 - 9 10 - 11 12 - 13


UK 1 - 2 3 - 4 5 - 6 7 - 8 9 - 10 11 - 12
EU 33 - 34.5 35.5 - 37 38 - 39.5 40.5 - 42.5 43 - 44.5 45.5 - 47
US 3.5 - 4.5 5.5 - 6.5 7.5 - 8.5 9.5 - 10.5 11.5 - 12.5 13.5 - 14.5




UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5
EU 35.5 36 37 37.5 38 38.5 39.5 40 40.5 41.5 42 42.5 43 44 44.5 45 45.5 46.5 47 47.5 48 49
US 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5


Size XS S M L XL


Size XS S M L XL
26" - 28"
28" - 30"
30" - 32"
32" - 34"
34" - 36"



UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13
EU 35.5 36 37 37.5 38 38.5 39.5 40 40.5 41.5 42 42.5 43 44 44.5 45 45.5 46.5 47 47.5 48
US 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5



Size S M L
UK 3 - 6 7 - 9 10 - 12
EU 35.5 - 39.5 40.5 - 43 44.5 - 47
US 4 - 7 8 - 10 11 - 13


Size XS S M L XL
UK 3 - 4 5 - 6 7 - 8 9 - 10 11 - 12
EU 35.5 - 37 38 - 39.5 40.5 - 42.5 43 - 44.5 45.5 - 47
US 4 - 5 6 - 7 8 - 9 10 - 11 12 - 13
Shipping to United States
Service Price Delivery Estimate
UK Standard £4.99 3-5 Days
UK Next Day £8.99 Next day (if ordered before 3pm)

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Frequently Asked Questions (FAQs)

Can I return an item I'm unhappy with?

Yes, provided it's in perfect condition with labels intact and you return it within 14 days of receipt. Please see our Returns section for more information about how to return.

Do I need to tell you when I'm returning something?

No, there's no need to contact us before returning your parcel.

Do I need to pay the postage costs to return the item?

Yes, you will need to pay the return postage costs. We also advise that you make sure you have sufficient postal insurance, just in case your parcel goes missing on the way back to us.

Do you have a collection service?

Unfortunately we're not currently able to collect returns - you will need to post your item back to us.

Will I have to pay postage again for my exchange to be sent?

No, we'll cover this cost - we won't charge you any additional postage for sending an exchange. We'll send your exchange using standard delivery.

How long will it take for you to process my exchange?

We aim to despatch your replacements within 24 hours of receiving your return, then our usual delivery times apply.

How long will my refund take?

We'll try our best to process your refund within 24 hours of receiving your return but please allow 7 days for busy periods. Don't forget that once we've processed your refund, it can take up to 72 hours to show up in your account.

How will I be refunded?

We'll refund you via your original payment method, except in the case of postal orders where we'll refund you by cheque.

I want to return my goods but I'm outside of the 14 day period. Can I still return them?

Yes, provided you return them within a reasonable time after purchase and they're in perfect condition. We're unable to issue refunds for items returned outside of the 14 day period but we can exchange your item or give you a credit note.

My goods are faulty - can I return them?

Yes, please return them in the usual way and we'll take a look at them. Don't forget to include all of your details plus any information you think might be helpful. If your item has a manufacturing fault, we'll exchange it for you or give you a refund.

Can I return a personalised item?

Unfortunately, personalised items are non returnable unless they're found to be faulty.

More information

We understand that sometimes you'll need to return items to us and we've made this easy, fast and simple.

Our no quibbles returns policy means that if you're not 100% happy with any item we send to you, we'll happily exchange or refund it for you.

When you receive your item you have up to 14 days to change your mind and send it back to us.

We'll exchange or refund all items which:

  • Are returned to us within 14 days of receipt.
  • Are returned to us in perfect condition, with their original packaging and with the labels attached.

Your statutory rights are not affected.

How to Return

  • Wrap securely in a bag or paper, taking care not to damage the product packaging and post to:
   Returns Department
   1 The Park
   Jubilee Way
   West Yorkshire
   BD18 1QG


  • When returning your item, remember to include the code and size of your replacements.
  • We'll despatch your replacements postage free to UK addresses.
  • We'll turn around your exchange as quickly as we can and subject to stock availability, aim to despatch your replacements within 24 hours of receiving your return.
  • Bear in mind that there may be slight delays during busy periods.



  • We'll refund your item via your original payment method except in the case of payment by cash or postal order where we will refund you by cheque.
  • We try our best to process all refunds within 24 hours of receipt, however during busy periods allow 7 working days for your refund.
  • When we've completed your refund, we'll send you an email to let you know.
  • Please note: Gift wrapping is non-refundable


Faulty Items

If you find a fault with your item, send it back to us and we'll take a look at it as soon as we can. If we find a manufacturing fault, we'll happily replace or refund it.

Faulty items should be returned within a reasonable time and preferably in a clean and dry condition. Please enclose all your details and a covering note explaining the fault and any other useful details. We'll try to get back to you within 24 hours of receipt of your parcel, although during busy periods this may take slightly longer.

Occasionally, if we're struggling to locate a fault, we may request a second opinion from the product manufacturer.

Your statutory rights are not affected.