One summer day last year in Sedona, Arizona, I observed an individual trying to go hiking in flip-flops. He carried a single bottle of water and was not wearing any head covering although the temperature was at 95 degrees.

After merely 20 minutes, the man had turned around, appearing hot and bothered, and had run out of water. That basically sums up the entire idea behind writing this guide.

So what to pack for a day hike? You don’t need a gear closet. You don’t need the $300 backpack either, tempting as the ads make it look. Get a handful of basics right, and a good morning on the trail stays good.

The Short Version: Your Day Hike Packing List

Short on time? Copy this and go.

• Water — at least 1 liter per 2 hours of hiking
• Snacks or a packed lunch
• A map or a downloaded trail app
• Sun protection: hat, sunglasses, sunscreen
• Rain jacket or an extra layer
• First aid kit
• Headlamp or flashlight
• Multi-tool or knife
• Fire starter
• Sturdy shoes, moisture-wicking socks
• Something to carry it all in

That’s the core of any hiking essentials list, more or less. Everything below is the “why” and the “how much.”

Water and Food: How Much Is Actually Enough

Water first, because it matters most. One liter per two hours is the baseline in mild weather. Hot day? Steep trail? Bring more. It is an understatement to say that people forget to do this constantly and running 3 miles without water is a very unpleasant afternoon.

When it comes to food, it’s fuel, not a picnic table. Trail mix. Jerky. A peanut butter sandwich flattened in your bag. Two granola bars. Does not have to be an exciting event. Bring a little extra along as well: If you twist your ankle or the path is longer than the map indicates, that extra bar becomes much more important than at the trailhead

The Ten Essentials (Yes, Even on a Short Trail)

Search and rescue crews didn’t dream up the “ten essentials” for fun. It’s a list compiled over the years from hikers who have found themselves in a predicament after something went wrong.

The National Park Service’s Ten Essentials guide it under the following categories: navigation, sun protection, insulation, light, first aid, fire, repair tools, food, water and emergency shelter.

It doesn’t have to be fancy. A paper map plus a downloaded trail app covers navigation. A drugstore first aid kit handles small injuries fine. A five-dollar headlamp solves the “what if it gets dark” problem before it becomes a problem. You’re not building a gear collection here—you’re just making sure a bad hour doesn’t turn into a bad night.

What to Wear on a Day Hike

Skip cotton. Full stop. It gets soaked with sweat, remains damp, and is miserable to wear: cold when it’s cold outside and sweaty when it’s hot. Wear moisture-wicking clothes, such as a synthetic or wool base layer, fleece for warm, and raincoat when there’s even a possibility of rain.

The shoes are far more important than one might think. Flat, dry trail? You probably don’t need heavy boots. Rocky or uneven ground? You want real tread and ankle support. Pair whatever you choose with wool or synthetic socks—a few miles of walking in cotton socks is a blister factory, no question.

Hat and sunglasses too, don’t skip those. Sunburn and glare will wear you down faster than the actual hiking does.

Choosing the Right Daypack

10 to 20 liters covers most day hikes.I have an old 18L one that is 6 years old and still working for me. It should contain your water, food, layers and odds and ends without making you feel like you’re carrying a suitcase up a mountain. More than 2 hours?  Look for a hip belt. It shifts weight off your shoulders and onto your hips, and that difference is real by mile four.

No refill stops on your route? Size up a bit so you can carry more water without cramming the pack.

Day Hike Checklist by Season

Summer: additional water, electrolyte packets, sun protection, shirt that allows airflow, bug spray if water or trees are present.

Winter: insulated layers, hand warmers, some spikes for traction if it’s icy and a headlamp, as the daylight fades quickly this time of year.

Spring and Fall: Pack for both. The weather is 20 degrees different from the trailhead to the top of the mountain and a light rain jacket is well worth its ½ pound of pack weight.

No matter the season, make your day hike list based on the weather conditions for the day’s hike, not the weather forecast for your hometown. Weather rules the mountains and the canyons.

Common Mistakes First-Time Hikers Make

But most importantly, prepare for the hike you plan to take and not the hike you think you are about to take. You are sure it’s going to be clear when you start your hike at 8 am and so leave your rain jacket back at home.

And since it’s “only a three-mile loop,” the extra snacks are superfluous. I’ve done the same mistake myself and have ended up two hours later hungry on a five-mile, not three-mile, hike.Second error: getting too late in the day. Know the time of your sunset before leaving home and leave with a buffer time to get to the car with light still in your eyes.

Looking for a detailed breakdown per trip? Our day hike packing list delves further depending on trail length and terrain. 

Final Thoughts

Don’t overthink your day hike packing list. Water. Food. A way to navigate. A method of keeping warm and dry. A method of dealing with a minor wound. That’s pretty much anything a normal trail can throw at you. Construct it once, pack it in your daypack and you’re ready again the next time the trail calls.

See our complete what to bring on a hike guide for lists of items for specific national parks and regions. 

FAQ

How much water for a day hike?

 A liter every two hours is the rough baseline, more if it’s hot or the trail’s steep. No refill spot along the way? Bring extra. I’ve cut a hike short over this exact mistake, and it’s not worth repeating. 

Does a daypack really need to be a backpack?

 Yes, even short ones. It also leaves your hands empty and you can’t miss the essentials simply due to a lack of hands.

What is the worst thing they do when they go on a day hike? 

Packing for the ideal trip. Weather shifts. Trails run long. Small injuries happen. A few extra ounces of gear is a cheap price for being ready.