High Altitude Trek Packing List Congratulations on signing up for your upcoming trekking adventure! By signing up for a high-altitude trek you have taken a big step; literally and figuratively!, While the idea of a high-altitude trek is exciting, it can feel overwhelming if you’re unsure about how to properly plan it, what to bring and how to pack smartly. If you are a beginner and just starting your trekking journey, there would be so many questions in your head. Don’t worry, this detailed guide on high altitude trek packing list breaks it all down in simple steps so you can pack smart, stay comfortable, and enjoy the adventure. Clothing Layers: Dressing Smart for the Mountains There is a popular Scandinavian proverb, “There is no such thing as bad weather, only unsuitable clothing” which emphasizes that proper gear allows for outdoor activity in any condition.