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The NEW Trail Runner Dog Running Vest is a lightweight, breathable harness that has two soft sided water bottles/Hydra® soft flasks included which fit into side zippered pockets - so your dog can stay hydrated on the trails!

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The Trail Runner Running Vest by Ruffwear is a lightweight dog harness that is designed for running and long hikes.  It is breathable, and has a balanced, fitted design, and so your dog can enjoy bounce-free runs!

To ensure your dog can rehydrate at rest spots, this dog vest has two zippered side pockets that hold two Hydrapak® soft flasks (these are included). There is also a small third zippered pocket on the back which is perfect to hold the Trail Runner Bowl and a couple of pick-up bags.

It has a reinforced webbing tow loop at the rear of the harness to attach your dog leash.  Note: there isn't a D-ring attachment on this harness - only the tow loop as it is designed as a running harness.

Sizing for the Trail Runner Running Vest

To choose the best size for the Trail Runner Running Vest,  measure around your dog's girth/chest - the widest point of the rib cage.

Size Fits Chests Measuring Capacity
XS 43-56cm (17-22") 0.8L
S 56-69cm (22-27") 1.1L
M 69-81cm (27-32") 1.2L
L/XL 81-107cm (32-42") 1.3L

Key Features of the Trail Runner Vest:

  • Adjustable vest-style design for comfortable and bounce-free water carry while running
  • Chest panel is made of lightweight air mesh for breathability.
  • Two large zippered side pockets are made of nylon with a bit of spandex for stretch. They snugly hold the 2 x soft flasks and/or other running essentials.
  • One zippered top pocket for small essentials like a bowl or pick-up bags.
  • Two Silicone Hydrapak® soft flasks included:
    • 2 x 500ml for size S - L/XL, 2 x 360ml for XS.
    • They're made of pliable, lightweight material. Just twist the valve & squeeze the bottle to dispense water. They shrink as you drink, so means less sloshing and more space savings.
  • Optimally positioned, reinforced webbing tow loop leash attachment point at the rear of the harness to attach your leash (NOTE: There is no D-ring on this vest)
  • Reflective trim for visibility in low-light conditions and light loop for attaching The Beacon (bought separately).

Along with the Trail Runner Running Vest, check out the other gear available in the Trail Runner Collection range including :

Ruffwear Trail Runner Running System - Running Dog Harness Lifestyle Photos


Get 10% of any leash when you buy a harness on Canine Spirit


  • Main body fabric: polyester air mesh (bluesign approved)
  • Pockets:  150 denier 91% nylon / 9% spandex
  • Chest & belly straps:  20mm nylon webbing & ITW Nexus Mac 1 cam lock buckles
  • Zippers:  YKK reverse coil zippers
  • Water Flasks: TPU, PP / POM, Silicone


  • Vest - Secure fasteners and remove water bottles.  Hand wash with mild detergent and hang to dry.
  • Water Flasks - Hand wash with dish soap.  Rinse thoroughly and air dry.  Store the bottles with caps removed.

Customer Reviews

Based on 1 review Write a review

Customer Reviews

Based on 3 reviews
Sian R.

Singletrak Pack - Sleek Fitting Dog Backpack with Hydration Bladders

Martha C.
Great backpack

She is still a little small for it but growing fast and seems happy and confident wearing it. It doubles as a car harness and I'm sure we will get many years of use out of it :)

Lindsay P.
Great pack

I ordered the size M for my Viszla (she is on the smaller side for the breed). It fits really well despite deep chest and narrow waist, and is quite adjustable. It hasn't rubbed her over distances up to 8km.
Definitely makes it a bit more a workout for her (our aim) and is great to be able to not have to plan routes around accessible taps!