What to actually pack for a one-day adventure
A short list that covers most day trips, and the three things people leave out that matter most.
The short list
For a day out within a couple of hours of a city, in reasonable weather, on a marked route, this covers the large majority of situations. It is deliberately short — long packing lists get ignored.
- More water than the distance suggests, and something with electrolytes on hot days
- Real food, not only snacks
- A layer warmer than the forecast, and a waterproof one
- A headlamp, even on a day trip that will obviously finish in daylight
- Offline directions or a paper map, because signal is unreliable exactly where you need it
- A basic first-aid kit including blister treatment
- Sun protection, including on overcast days
The three things people leave out
A headlamp is the first. Descents run long, groups move slower than planned, and a phone flashlight drains the battery you may need for navigation.
The second is blister treatment. It is the single most common thing that turns a good day bad, and it weighs nothing.
The third is telling somebody where you are going and when you expect to be back. It is not gear, but it is the item on this list most likely to matter if something goes wrong.
What to leave at home
Most day trips do not need a large pack, and a large pack encourages carrying things you will not use. If you are on a marked route within a couple of hours of a city, you are not on an expedition.
The exception is anywhere with no cell coverage, a real climb, or genuine weather exposure. On those, the list above stops being generous and starts being the minimum.