Brand: Dera Running
Category: Trail & Ultra Gear
Recommended by Tim Tollefson, Coffee Pug Donut Nerd — Mammoth Lakes, CA
Highlights: comfortable
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 doing long efforts or ultras who need hands-free hydration and nutrition storage without bounce or a full vest. Particularly suits those with sensitive skin or who want adjustable fit on the fly.
- What people are saying
- Hosts consistently praise the BOA dial-fit system for eliminating bounce and allowing mid-run adjustments without stopping, even as flasks empty and weight shifts. Storage capacity (two flasks, phone, gels, extras) and skin comfort are frequently highlighted; no notable criticism appears across the notes.
- Worth noting
- Sizing runs true but hosts suggest sizing down if on the edge, as the belt stretches. The included 575–600 mL flask locks in place; a longer zipper pull and shirt-tuck grippies on the back are called out as practical details.
Tim Tollefson's review
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 by Tim Tollefson, Coffee Pug Donut Nerd
Frequently asked questions
Who is the Dera B01 Trail Running Belt for?
Runners doing long efforts or ultras who need hands-free hydration and nutrition storage without bounce or a full vest. Particularly suits those with sensitive skin or who want adjustable fit on the fly.
What do experts say about the Dera B01 Trail Running Belt?
Hosts consistently praise the BOA dial-fit system for eliminating bounce and allowing mid-run adjustments without stopping, even as flasks empty and weight shifts. Storage capacity (two flasks, phone, gels, extras) and skin comfort are frequently highlighted; no notable criticism appears across the notes.
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 belt stretches. The included 575–600 mL flask locks in place; a longer zipper pull and shirt-tuck grippies on the back are called out as practical details.
What does Tim Tollefson say about the Dera B01 Trail Running Belt?
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.
Why does Tim Tollefson recommend Dera Running?
Tim Tollefson recommends the Dera Running Dera B01 Trail Running Belt for trail & ultra gear. 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.
Is the Dera B01 Trail Running Belt a good trail & ultra gear?
Yes — Tim Tollefson recommends the Dera B01 Trail Running Belt by Dera Running as their trail & ultra gear pick. 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.
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What other hosts are saying
9 experts recommend the Dera Running Dera B01 Trail Running Belt.
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!
One of a kind Dial-Fit system lets you "dial in" your precision fit.
Recommended in Running Belt Roundup
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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