This is the checklist I use for summer day-hiking, summer backpacking and winter overnight trips in the Rockies. You’ll need to modify it based on personal taste, season and region of the country.
Summer Day Hiking
CLOTHING
lightweight socks
medium-weight wool socks
Gore-Tex socks (in wet terrain)
boots
convert-a-pants
short-sleeve shirt
long-sleeve shirt
down sweater
fleece sweater with hood
sun hat with skirt
fleece hat
light gloves
rain pants
rain jacket
sunglasses
EQUIPMENT
headlamp with extra batteries
Swiss Army knive
water filter
first aid kit
2 large, empty stuff sacks for clothing in pack
day pack
map
compass
altimeter
GPS unit
monocular
notebook with pen and pencil
lip sunscreen
bottle of skin sunscreen
water bottle(s)
toilet paper
watch
mosquito repellent
trekking poles
whistle
repair kit
cell phone
plastic bag for trash
lunch
ADD FOR SUMMER BACKPACKING
sleeping bag
sleeping pad
tent
stove
lighters
pot with lid
pot grips
fuel
wilderness permit, site map, parking permit (for dash)
75 feet of cord
2 large garbage bags
toothbrush, toothpaste and floss
bowl
spoon
mug
a few paper towels
book
repair kit
ADD FOR ONE-DAY WINTER TRIPS
thermos or insulating water-bottle sleeve
long underwear tops and bottoms
fleece bibs
down jacket
gaiters
snowshoes
ski poles
goggles
Neoprene face mask
sunglasses
heavy mittens
heavy gloves
second pair of light fleece gloves
vapor-barrier socks
double plastic mountaineering boots or pac boots
ADD FOR MULTI-DAY WINTER TRIPS
1 cup measuring cup (for adding snow to pot)
backcountry shovel
avalanche beacons
vapor-barrier sleeping-bag liner
extra pair of liner socks
second foam pad
six stuff sacks (for use as tent stakes)
ITEMS TO DROP FROM SUMMER LIST FOR WINTER TRIPS
water filter
headnet
mosquito repellent
75 feet of cord
convert-a-pants
short-sleeve shirt
long sleeve shirt
down sweater