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If you’ve ever charged into a pre-dawn trail run or pushed past sunset, you know how make-or-break a good headlamp can be.
The updated 2025 Knog Bilby Run 400 doesn’t just tick the usual boxes, it reshapes the checklist entirely, this is innovation.
Bright where it counts
This 400-lumen silicone dynamo cuts through darkness with a beam distance of up to 330 feet. That’s plenty to scout your next rocky turn or dodge a sneaky root at speed.
There’s also a ‘Boost’ mode for those “uh-oh, where’s the trail?” moments, just double tap the left button and your full 400 lumens fire up on command.
The Bilby Run 400 has 7 lighting modes, each with a purpose:
- Boost Right (5-60 hrs)
- Ambient R (14-105 hrs)
- Ambient L (22-98 hrs)
- Spot (14-105 hrs)
- Red LED (32-103 hrs)
- Reading (17-75 hrs)
- Halo Mode
It’s smart lighting that adapts to your run, not the other way around.
Made for runners
Most headlamps work fine for running, but they aren’t all designed for it. This one is.
At just 3.1 ounces and built from single-piece medical-grade silicone, it hugs your head without slipping, pinching, or bouncing. And thanks to its soft-touch matte finish and simple pull-to-tighten design, it doesn’t matter if you’re bald, curly, sweaty, or wearing a buff, it stays put.
Better still, that transparent strap lets the red side LEDs glow through, creating a 360° halo effect so you’re visible from all directions.
It’s a brilliant little touch for early morning trailheads or late-night city runs.
Battery smarts and customizable control
Depending on the mode, battery life ranges from 5 to 105 hours and you can dial it in precisely using Knog’s ModeMaker app.
Want to rearrange the light modes or remove ones you don’t use? Easy. Want to know when it’s time to recharge? Battery indicators have you covered.
And when you do need to charge, the integrated USB-A plug flips out of the pod and pops straight into a wall adapter or laptop. No wires, no fuss.
Not just waterproof
The Bilby Run 400 is IP67 rated, meaning it’s dust-tight and waterproof down to 3 feet.
Combine that with its durable, odor-resistant strap and you’ve got a headlamp that’s built for more than just trail running.
You can use it for anything from bikepacking, snowshoeing, festival hopping, or even hiking with kids in unpredictable weather.
The key specs
- Price: $76.99 at knog.com or select retailers
- Max output: 400 lumens
- Weight: 3.1 oz (88g)
- Waterproof: Yes (IP67)
- Rechargeable: Yes (USB-A built-in)
- Battery life: Up to 105 hours
- Colors: Coral, Lime, Blue, Grape
Verdict
The Knog Bilby Run 400 isn’t the most powerful headlamp out there but it just might be one of the best running-specific ones.
It’s lightweight, clever, and easy to use as there are only two buttons. It doesn’t bounce on the run, the controls make sense, and the visibility is awesome.
