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Running Trail Bag Small

Sale price: $34.99 Regular price:

front pockets for quick access to supplies while running.

Color: Select a color
Size: Select a size
Sale price: $34.99 Regular price:

Free shipping over $35

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8312248

Product Videos

Product Features

A photo of the Running Trail Bag Small in use

Running Trail Bag Small |

front pockets for quick access to supplies while running.


8L in front and back pockets

Multiple compartments

Separate 1L or 2L water bladder compartment (1L bladder sold with bag).

Easy to use

Front pockets for easy access when running

Product Customer Reviews

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549 Reviews
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Running Trail Bag Small,dark gray
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Fantastic value

Couldn't believe the price of this bag, would be a bargain without the bladder included. Wore it on a couple of training runs prior to the North Devon Marathon and i was really quite pleased. Positives - bargain price! The front pockets were what i was really after, enough for my phone, small hand sanitiser, tube of glucose chews, small bag of jelly beans and chew bar. Zipped pocket inside rear pocket for car key, larger rear pocket for a jacket, foil blanket, long sleeve top and still room to spare. Double clips across chest mean it sits real snug but expands comfortably with breathing. The little strap tidies are fantastic, keeping them real tidy. I spent over 5 1/2 hours running a tough coastal marathon and got no shoulder rub or discomfort. The only negative would be that it does sit a little further down your back than I'd like when using a 2 litre bladder.

Good beginners trail pack

Bought this as a first trail pack for a half marathon and to see if I could run with a pack. Took two or three races to work out the best way to route the hydration hose but since then it has been great. Just enough room for keys, MP3 player, snacks and a lightweight running jacket. Machine washable too if you don't mind the logo peeling off. Only negatives are the poor water flow from the bladder and the annoying squeak when running (reading other reviews it may be the hook on the bladder). Moving up to trail marathons so now looking for a larger pack. Great value and ideal if you want to try a running backpack but don't want to spend a lot of money.

If in doubt, buy it!

Snug fit. Easy fill and clean. Great size pockets. Simple bite and drink tube

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Great bag, perfect size

Was running a 10k and decided I didn't want to use the bag drop so needed something to fit a few bits in. This bag is perfect. Small, and comfortable. Would definitely recommend

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Great bag with a few custom adjustments

When I first wore this bag I hated it, but with a few custom adjustments I now adore it! Firstly, it doesn't explain how to wear the 'tube' I'm not sure if this is the proper way, or the only way, but after so many kinks in the tube this way works perfect. So let me help you! Thread mouthpiece through right shoulder strap from inside, then through the loop, then attach it to the plastic clip on the opposite strap. No more kinks and really easy to access. Also, make sure there's no air in the bladder, this will help eliminate most of the sloshing. Don't put your phone or heavy things in high up pockets. let it all sit at the bottom (it bounces otherwise) My biggest hate was the bag squeaked constantly while I ran. turned out it was the plastic hook the bladder dangles from. so I took this out and replaced it with a metal keyring clip and now it's silent. Only other adjustment is I am going to make cloth sleeves for the top of the straps and when wearing with a vest top it rubs quite a lot. This is a unisex bag, so as the straps cover your chest I don't know how it would be on someone with larger boobs than me (I'm a 32b) but at that size I have the straps done up as tight as they will go and it's just tight enough, If I was smaller it would probably be too loose. Overall, with patience this is an excellent value for money bag!

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Great bag.

Good price, been with me on hikes, runs and muddy obstacle course races. The mesh at the back is semi transparent so I can drop flashing light if am in the mix with traffic. Machine washable too.

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Bladder leaked

Bladder leaked after three runs, rubbish.

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Thank you for your feedback and our product manager will take care of your review in order to understand if is a isolate case or not.
Don't forget that you can return the product and ask for a refund in all our decathlon stores
Thanks againa

UK Market Manager Running
Trail Bag

Perfect for 18+ mile runs and just the right amount of space for waterproofs, front pockets for gels, water on tap - great fit, no rubbing or chafing, all I need and small / neat fit as well.

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excellent bag !!

I bought this bag because i'm new to trail running and didn't want to splash out on a very expensive bag if i wasnt sure i would get along with a running back pack. Ran a 22 mile trail today and the bag was great - no rubbing, no blister, didn't notice the bag for most of the miles. The water platypus contained in the bag is ideal - again fits well easy to use. There is just one zip compartment but fitted snacks and an extra bottle easily. Also a small zip pocket inside for phone and keys. mesh pockets on the front are good for storing sweets :) Would highly recommend

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Great bag

Rides nice and high on the shoulders (I'm 6"2' and can get a decent fit) and I've hardly noticed it's there after the first couple of runs. The drink bladder is a nice touch, although the bite valve is loose fitting, and mine was lost on the 3rd run with it. It seems to work ok without the bite valve though, as there is also a secondary push/pull valve. Plenty of space for required FRA kit (waterproof trousers and jacket, gloves, hat, map, emergency rations)

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Very comfortable

Spend a few minutes adjusting the straps for what you are wearing and you will forget that you are carrying it as it's snug design hugs your body shape. I like the fact that the bladder clips in and out very simply and that to wash everything out you just need a sink full of cold fresh water. The pockets give you oodles of space if you do want to run all day long without stopping and the extra small zip up inside flap is ideal for mobiles and wallets.

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Excellent backpack

Bought as my first running backpack. Wasn't sure if I'd get on with it, but is better than wearing a belt. Has plenty of storage. A zip pocket for my phone, front mesh pockets for my gels. The main zip compartment is large enough to store maps, waterproofs and more. It fitted pretty well. I was able to tighten the straps as tight as I needed to, but there was still a bit of bounce off the shoulders. Didn't bother me too much though.To stop some of the sloshing from the water pack, make sure you squeeze any excess air from the pouch. I don't fill it completely and if you leave air inside it will make a lot of noise as it fills that gap when running. Otherwise a great entry level bag and excellent value.

A great little pack

A great pack. Easy to use with lots of extra space and pockets for keys, money and phone etc. It has a hole for you headphones so you don't have to wear an armband to track progress and listen to music. I did a half marathon off road with this pack and forgot I was wearing it soon after starting. A great buy!

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excellent backpack

great price, comes with a removable water pack, perfect for carrying mandatory trail running bits and bobs.

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Unpacked, filled the bladder to rinse it, only to find it leaks where the hose connects to the bladder. I've now got to, either take a 16 miles round trip to the store or fork out for the postage to return it. Is there no quality control done on Kalenji/Decathlon products !?

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Dear Mr Bernard

Thank you for shopping at Decathlon,

Thank you for your feedback, we are sorry to hear this about one of our products, and apologize for any inconvenience caused.

As a company we do practice quality control and this matter will be passed on.

Thank you

Nojmul Islam UK Product Trainer DECATHLON
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Additional Product Information


Outer fabric: 100.0% Polyamide ; Inner fabric: 100.0% Polyester cationic

Water bladder:

Capacity:contenance:1 literLength: 11.8”Width: 6.3”hose length: 39”.

Safety whistle

110 decibelsstored in a small chest pocketcompulsory for many races (TRAIL RUNNING)


bag weight: 10.6 oz. with pocket empty.

Restriction water bladder

-4°F< t°C water <104°F. no milk, no alcohol, no microwave.

Storage instructions

do not leave water in the bladder more than 24 hours. Rinse well using clean water after use and allow to dry before storing away.



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