One Bag Travel Challenge: 7 Days, 35 Litres, No Excuses | TREKARIUS
One Bag Travel Challenge
Seven days. One bag. Everything you need on your back and nothing you do not.
That is the One Bag Travel Challenge. No checked luggage. No spare bag "just in case." No excuses about the weather, the work laptop, or the extra pair of shoes. You carry your whole trip in a single carry-on and you live out of it.
Most people think they cannot do it. Most people are wrong. They are carrying fear, not cargo.
The rules, kept simple
- One bag. Carry-on size, nothing checked.
- Everything lives in it: clothes, tech, toiletries, documents.
- No shopping your way out of a bad pack. Forgot it, you adapt.
- Seven days minimum. The longer you run it, the more it teaches you.
That is the whole game. Simple to explain, harder to do, and it changes how you travel for good.
Why one bag beats the industry standard
The travel industry sells you the opposite. Bigger cases, more compartments, wheels, gadgets, a bag for every scenario. They make money when you carry more. We do not.
One bag is freedom you can feel at the airport. You walk straight past the baggage carousel while everyone else stands there praying their case shows up. You move through a train station without dragging a suitcase over cobbles. Hands free, whole life within reach.
Carry less and something shifts. You stop managing your stuff and start seeing the place you came for.
How to Pack a 35L Carry-On for 7 Days
The pack does the heavy lifting here, and this is where the 35L earns its place. Thirty-five litres is the sweet spot: big enough to hold a real trip, small enough to stay carry-on legal at roughly 55 by 35 by 22 cm. Empty it sits around 1.4 to 1.6 kg, so the weight you carry is your kit, not the bag fighting you.
Roll your clothes, do not fold them. Split clean from worn and tech from toiletries with the packing cube set. A laptop up to 16 inches drops into its own compartment with side access, so airport security does not turn into a full unpack. Passport and phone sit in the hidden back pocket, flat against your spine. Cash and cards ride in the covert strap pockets, where no hand in a crowd is getting near them.
The shell is 600D ripstop nylon with a TPU coating. Water-resistant, not waterproof, and we will not pretend otherwise. It shrugs off rain, dust, and the general beating of real travel. Woojin hardware on the buckles, because cheap clips are the first thing to fail in the field.
The One Bag Mindset: What Actually Breaks People
It is never the packing. It is the head.
Day two you will want the thing you left behind. Day four you will realise you never needed it. By day seven you are moving lighter and thinking clearer, and going back to a suitcase feels like strapping on ankle weights.
The challenge is not about owning less for the sake of it. It is about proving to yourself that you need far less than you were told. Once you know that, nobody can sell you fear again.
Take the challenge. Join the crew
Run your own One Bag Travel Challenge. Seven days, one bag, no cheating. Film it, photograph it, or just live it and tell us how it went.
Tag @trekariuscrew and show us your pack, your route, your worst day and your best. This is the Field Crew. Real travelers running real trips, not a highlight reel. Stay for the real, or follow a reel.
The bag we built for this. The TREKARIUS 35L was not designed in a boardroom. It was built from what failed us in the field across more than 96 countries, then fixed. Every claim we make on it, we can show you on camera. It ships with the 3-piece packing cube set and a 60-Day No-BS Field Test Guarantee. Run it hard. If it does not hold up, send it back.
Get the 35L PackFAQ
What counts as one bag?
Anything carry-on legal that you do not check. The 35L is built to sit right at that limit at roughly 55 by 35 by 22 cm.
Do I need a special backpack to do this?
No. You need one bag and the discipline to live from it. A pack built for the job just makes it easier and keeps your gear organised and secure.
How long should the challenge last?
Seven days minimum. Longer is better. The lessons compound the longer you run it.
Is 35 litres enough for a long trip?
Yes, for most travelers in most climates. People run multi-week and multi-month trips out of 35 litres. It comes down to how you pack, not how much you carry.
What if I forget something?
You adapt. Borrow, wash in a sink, or go without. Learning the difference between a real emergency and a minor inconvenience is the point.
Gear up for the challenge: TREKARIUS 35L Travel Pack
Run it with people who get it: Join the Field Crew
Show us your pack: @trekariuscrew on Instagram
