Rated 4.83 out of 5 based on 6 customer ratings
(6 customer reviews)

$79.99 $67.99

4.83 out of 5

The forerunner to this pack- the Impulse- was inspired by, and developed exclusively for, Karl Meltzer. There is no other runner in the world like legendary Karl Meltzer and no other race in the world comparable to the Speedgoat 50K, the race Karl designs and directs. Now the pack Karl has used for years is even better and has a new name in honor of Karl and the gnarliest race of them all, the Speedgoat 50k.

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Recommended Use:
Racing and training; 2 hours between refueling stops.


• Angled holsters for easy access perfectly holds ultra-soft and squeezable 550mL UltraFlask™ bottles (included).
• Mesh and fabric pocket center back to hold a small jacket.
• One side trash pocket and one side zippered pocket for securing essentials.
• Soft perimeter binding made with polyester to wick away moisture.
• Minimalist streamlined design for a comfortable stable ride.
• Removable quick access front straps for a jacket, Z-poles, or other accessories.

Fit: Unisex
Size: Universal
Color option: Luminous Blue
Hydration (included):  2 x UltraFlask 550
Capacity: 40 c.i.; .65 L

Additional information

Weight N/A
Dimensions N/A

Waist Belt


Fluid Capacity

2x 550mL UltraFlask bottles

Product Weight (lbs)

Total Volume

35.7 c.i. (.58 L)


6 reviews for Speedgoat

  1. Rated 5 out of 5

    (verified owner)

    LOVE this waist belt!
    I have used it for hundreds of miles and a couple of ultras.
    **The wide belt and soft components are comfortable.
    **It fits well and does not bounce.
    **I like having the weight of my gear/fluids/food down lower on my body-NOT on my neck/back/shoulders.
    **It is so much cooler than a vest.
    **It is so much faster and easier to fill bottles at ultra aid stations than a hydration bladder.
    **The bottles are so much easier to clean than a hydration bladder.
    **It has a lot of versatility, including:
    ++You can rotate it in a clockwise direction when only carrying one bottle, and center the one bottle on the lower back.
    ++You can carry bigger (24 ounce) bottles!
    ++You can add another pouch on the right side of the belt for more carrying capacity.
    ++You can even use the front straps for your race number!
    ++If you are only carrying one bottle, you can put your jacket and/or food bag in the other water carrier.
    THANK YOU for this great piece of gear!
    Dr. Bryon Solberg

  2. Rated 4 out of 5

    Love this pack! The minimalist design is great for those who prefer to carry only the essentials, and carrying weight at your hips really seems to save your back on longer runs. The only thing this pack is missing is a convenient place to carry a cell phone. Otherwise, it’s the best hydration belt out there, hands down!

  3. Rated 5 out of 5

    The Speedgoat is an excellent minimalist waist belt that delivers on its “no-bounce” promise. You forget you are evening wearing it until you need something. The UltraFlask 550 bottles sit perfectly in line with my an 6’-2”, 150 lbs anatomy and they glide effortlessly in and out of their pockets. By the way, the UltraFlasks 550 bottles are awesome!! The no hassle side pockets do their job for storing gels, electrolytes, headlamp, etc.. The rear pocket is a bit on the lean side for my medium size Houdini jacket but it can get it stuffed in place with some effort and a couple of magic words. The only modification I have made is adding some Velcro to the end of the strap to avoid the flap, added a slide on zippered front pocket, and ditched the pull straps and replaced them with elastic bands (“Locklaces”) for the poles when I carry them. Bottom line: I am very happy with the Speedgoat waist belt.

  4. Rated 5 out of 5

    Excellent for long training runs or races. I recently wore it for a 60k with no bounce or discomfort.

  5. Rated 5 out of 5

    (verified owner)

    I received my new Speedgoat last week and just used it on a very muddy 50k. It held up great to my 230lb frame falling and slipping for 5 plus hours. Bottles are easy to access and has a great fit. It will be with me on the Gorge 100 in April. Thanks!

  6. Rated 5 out of 5

    (verified owner)

    Excellent product! Great fit. Does not move or shake like other brands. Bottle size is appropriate for any distance but I plan on using this for my next hundred.

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