Brand: Dera Running
Category: Trail & Ultra Gear
Recommended by Abraham Garrido, Runner/Cyclist — California, USA
The B01 Trail Running Belt by Dera Running is an innovative and adjustable solution designed for active runners. With its unique dial mechanism and included hydration flask, it ensures a comfortable and secure fit while keeping you hydrated on the go. 1. Unique dial adjustment system for a customizable fit that moves with your body. 2. Includes a 575ml HydraPak UltraFlask for convenient hydration during long runs. 3. Lightweight and breathable materials designed to minimize chafing and enhance comfort. 4. Ample storage capacity for essentials like keys, snacks, and energy gels. 5. Reflective detailing for increased visibility during low-light conditions. 6. Versatile design suitable for various activities, including trail running, hiking, and cycling. 7. Durable construction to withstand the rigors of outdoor adventures. The B01 Trail Running Belt is ideal for trail runners and outdoor enthusiasts seeking a reliable hydration solution during their activities. It performs best in varied terrains and conditions, providing comfort and accessibility for both novice and experienced athletes. Whether you're training for a marathon or enjoying a weekend hike, this belt excels in keeping your essentials secure and your hydration within reach. Perfect for year-round use, it adapts seamlessly to any running or outdoor scenario.
Price: $129
- Who it's for
- Runners who need a stable, high-capacity belt for long efforts — ultras, long training runs — without resorting to a vest. Particularly suits those with sensitive skin or who hate mid-run bounce as load shifts.
- What people are saying
- Hosts consistently praise the BOA dial-fit system for eliminating bounce even as flasks empty and weight drops, and call out the storage capacity (two 600mL flasks, phone, nutrition, poles) as genuinely useful. Praise is one-sided across all notes; no criticism surfaces.
- Worth noting
- Sizing runs true but hosts suggest sizing down if on the edge, as the material stretches. The included flask locks in place, the back pocket has a long zipper pull for on-the-move access, and small grippers allow tucking in a shirt.
Frequently asked questions
Who is the Dera B01 Trail Running Belt for?
Runners who need a stable, high-capacity belt for long efforts — ultras, long training runs — without resorting to a vest. Particularly suits those with sensitive skin or who hate mid-run bounce as load shifts.
What do experts say about the Dera B01 Trail Running Belt?
Hosts consistently praise the BOA dial-fit system for eliminating bounce even as flasks empty and weight drops, and call out the storage capacity (two 600mL flasks, phone, nutrition, poles) as genuinely useful. Praise is one-sided across all notes; no criticism surfaces.
What should you know before buying the Dera B01 Trail Running Belt?
Sizing runs true but hosts suggest sizing down if on the edge, as the material stretches. The included flask locks in place, the back pocket has a long zipper pull for on-the-move access, and small grippers allow tucking in a shirt.
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What other hosts are saying
12 experts recommend the Dera Running Dera B01 Trail Running Belt.
Seth LaReau, Trail runner. Writer. Founder and author of Trail Waves.
The only dial-fit running belt. No bounce, adjustable fit, ample space for flasks and/or trekking poles. Highly intentional design and a comfortable fit. It's the best running belt I've ever used.
Recommended in Big Alta 100K
Best belt on the market, in my opinion. Going to pair it with a Tantrums vest for my 46k. This thing is super sick, and I highly recommend this belt to anybody.
Recommended in Broken Arrow Triple Crown :)
Shelby Farrell, Athlete. Marketing Professional. Cat Mom.
First dial-fit running belt I’ve used, and it legit holds two flasks without feeling like you’re wearing a floaty around your waist. The included flask fits perfectly and actually locks in place. Big fan of the longer zipper pull on the back pocket too, easy to grab from behind while moving. Also has little grippies so you can tuck a shirt through the back. Haven’t tested poles with it yet, but overall really impressed by how it manages to feel both stretchy and secure at the same time.
Recommended in Vermont 100
Makena Morley, Professional Runner (Roads, Trails...)
I have three belts I am deciding between to race in - this one sits the best and doesn't bounce at all!
Recommended in Broken Arrow Race List
I used this belt for 50+ miles in my first 100-mile ultramarathon. I was able to hold 2 600mL soft flasks, 4 gels, my phone, and a rice crispy treat. This belt is super comfortable on the skin which is a huge plus for me because I have sensitive skin. The belt is true to size, and I recommend sizing down if you're right on the edge as it will stretch a little bit. This is my go-to for all of my runs now.
Recommended in Products I Love!
great all around belt, love the dial adjustment while running
Recommended in 10 Products I Actually Use
One of a kind Dial-Fit system lets you "dial in" your precision fit.
Recommended in Running Belt Roundup
Dreamed up right here in Mammoth by founder Morgan, who still calls these mountains home. A local favorite for carrying the essentials on the move.
Recommended in tim's trailfest selects
The storage on this belt is the real deal. Combined with the BOA dial, you can dial in the fit exactly how you want it to ensure there's no bounce, even when carrying a lot of gear and nutrition. It's been a total game changer when it comes to storage on long runs.
Recommended in Running Essentials
Jamie Hunyor, Ultrarunner & field botanist
Finally a favorite belt after making due with the Naked belt for a couple years. The dial-fit system is revolutionary. Truly no bounce, even as I lighten my load throughout a run by drinking my bottles to empty. Just a few twists on the BOA without even having to stop running!
Recommended in Daily drivers
Dial-Fit system is amazing. Belt is comfortable and carries all you need. Love the zippered pocket.
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