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Men's Trek 500 Hiking Pants

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Sale price: $39.99 Regular price:

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Model: 8493644

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Product Features

Men's Trek 500 Hiking Pants is designed for backpacking in the mountains over several days (e.g. Mont Blanc tour).

The ideal multipocket backpacking pants: they are the best compromise between durability and light weight

A photo of the Men's Trek 500 Hiking Pants in use


Heavy-duty fabric panel on the areas most exposed to friction

Freedom of movement

Hybrid construction with the use of stretch fabric in suitable areas

Quick dry

Use of breathable synthetic materials that dry quickly

Water repellent

The front and rear reinforcement zones are water-repellent


Light, breathable fabric used in areas with low friction


These pants weigh approximately 14.5 oz in size 36 (L).

Easy to maintain

Machine washable synthetic fabric, requires no ironing.

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Men's Trek 500 Hiking Pants,slate blue 

Men's Trek 500 Hiking Pants,slate blue 

Men's Trek 500 Hiking Pants,slate blue 

Men's Trek 500 Hiking Pants,slate blue

Product Customer Reviews

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Men's Trek 500 Hiking Pants,slate blue
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Amazing product, too tight on the thighs

Starting off... these are an amazing pair of trousers. Genuinely. I have a pair of Fjalraven Keb shorts, and Trousers, and these are comparable in quality and functionality... especially zipped pockets. :D Coming round to buy another two pairs of trousers and shorts for an expedition later this year.... when I saw these I was blown away at the product. Its hard to justify spending 9x the price of Fjalraven when you look closely at these Trek 500 trousers. Yet another prime example of Decathlon putting out a great functional product that looks good too. Stick with this product for some time guys!!! The colours and style is absolutely brilliant. Would be great to have a dark grey/black option too. However... the sizing is a bit off I normally always take a 32" waist. And initially tried the 32" and were way too tight on the thighs! I went one size up to 34" waist, which I was surprised that the waist still fitted, but still, a tad restricted around the thighs and 'lunchbox'. This was even more noticeable on the Trek 500 shorts. The trek 500 shorts waist on the 34" though is a bit baggy. Im not sure whether its that us English Roastbeefs have a bigger lunchbox and thighs than the French guys :p but It definitely would be better for the development team to size their trousers and shorts better, around the lunchbox zone, and especially the thighs. For anyone who has strong thighs, running, hiking, cycling, gym-goers etc, be aware the leg sizing is too tight on your normal size.

Strange sizes

Trousers arrived today , seem good quality but sizes are way off, 38" waist from any other supplier are fine but these I couldn't even fasten up. Returned for 2 sizes bigger, let you know how they go when they arrive.

Great pants

Lightweight and dry easily

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Hello Jerome,

Thank you for your review on this Men's Mountain Trekking trousers - TREK 500 - Blue.

You might want to go for this Men's Mountain Trekking Modular Trousers - TREK 500 - Dark grey It is also lightweight and  quick drying but the difference is, this pants can be converted to shorts which is perfect for Singapore weather. 

Hope to see you in any of our stores again! :)

Sport Leader For Hiking & Trekking

"Look deep into nature and you will understand everything better!"
Good but got manufacturing detected product

Bought two pants from store, one was good another came with this defect in ankle thingy where it is supposed to tighten. I went on a with10 days trek with these 2 pants. When I used the second pant and tightened the ankle it broke. I came back, I washed it ( of course I cannot return it in the same condition). I went to the store to exchange, they denied saying it's a physical damage so they are not going to replace it. Please test that string in the ankle before buying it.

Hello Shivam,

Thank you for your valuable review. We are sorry that we could not return your product because of the physical damage which comes under wear and tear, and wear and tear does not come under our 2 year warranty promise.

Please feel free to write back to me in case you have any further queries.


Product Trainer and Passionate Backpacker

Stylist trousers

Light, comfortable and fitted well. The draw string at the bottom of the leg coped with the leg being too long.

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Water repellent?

Just purchased these pants after lots of searching and review checking I found these pants to be suitable for my intentions. Just went out in them and got caught in an absolute down pour! Safe to say I will be spraying waterproofing on these pants as I’m not entirely happy. And you claim to (reactivate the water repellent) by putting the pants in a tumble dryer for 10 minutes on a low heat yet it states to not tumble dry these pants. So what am I supposed to do!

Good for a winter trek

Used this for 4 days in temperature ranging from 6° to -5°. Comfortable and re-usable.

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Excellent Trousers

Thought I’d give these a go having seen the reviews. Got them today, straight out on a three mile dog walk in a howling gale with new Marino long johns underneath. Very impressed. Beaded a lot of water off and dried very quickly. These will be perfect summer mountain pants. Wish cargo pockets were slightly bigger but left hand one was big enough for pair of seal skins gloves. I own two pairs of Fjallraven trousers and whilst their features are generally better, they are also vastly more expensive.

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Love the style and fit

Just fits perfectly Great price and material Love it

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Great comfort and flexibility

Used this for a Himalayan trek where it rained for a few days, very comfortable. Used two pairs over 10 days, not a single complain.

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lot to improve

material is good, but stitching is giving way at seams, pocket designing could be better

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Hello Narayana,

Thank you for your valuable review. We are sorry that you were not satisfied with the product. We have a 2 year warranty on any manufacturing defect and stitching is covered in it, the issue might be because of some manufacturing defect from our end and we appreciate your feedback on the design of the product.

As a solution,I request you to kindly visit your nearest Decathlon store and get the product exchanged/Refunded.


Product Trainer and Passionate Backpacker


Great trouser

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Excellent product

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Best tracking lower

It is one of the best

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Forclaz men’s blue mountain trekking trousers trek

It’s a best brand and trousers quality is fantastic. Colour combination is perfect.

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Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 100% Polyamide

Outer fabric

  • 88% Polyamide
  • 12% Spandex


  • 100% Polyester cationic


  • 85% Polyamide
  • 15% Spandex

Hybrid construction

Pants designed with 2 different components: - a durable fabric (7.3 oz/sqm) on areas that need protection from rubbing (buttocks, bottom of the leg at the front). This fabric is slightly stretchy, offering great freedom of movement - and a light and breathable fabric (4.4 oz/sqm) on the rest of the pants.

Water-repellent properties info

These pants have water-repellent inserts (bottom of the legs at the front, buttocks) that enable the water to slide off the surface of the fabric. Please note, this does not mean WATERPROOF. The water-repellent property prevents the pants from getting wet too fast but will not keep you dry under steady rain. For this, we recommend that you wear overpants such as the Trek 500 (ref. 8493660). Water-repellency can be reactivated by tumble drying the pants for 10 min on low temperature.


2 zipped hand pockets 1 zipped left thigh pocket 1 right thigh pocket with flap and 1 internal smartphone compartment. Elasticated tightening system at the bottom of the leg for perfect adjustment of the pants on the shoes. Pants sold with a belt

Sizing information

Straight cut that, thanks to the use of stretch fabric where it is needed, guarantees a high level of comfort when moving. Choose your usual size. Inside leg length of 33" in size 36 (L) Width at the bottom of the Pants: 8.4" in size 36 (L)

A score for comparing the products' environmental impact

The product's environmental impact is calculated over its entire lifecycle using different indicators. An overall ABCDE rating is given to help you easily identify products with the best environmental performance by comparing and contrasting products of the same type (T-shirts, pants, backpacks, etc.). Decathlon actively promotes this environmental rating initiative. For more information:



Product testing

These shorts have been tested and validated in the field in real conditions. It was worn for 5 weeks by several testers not affiliated with Decathlon who undertook the Grande Traversée des Alpes (GTA) in late spring 2017.

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Size Guide Visual