Before I delve into the details of my winter backpacking gearlist, I want to start by defining ‘winter backpacking’. Although most people define winter backpacking as backpacking between the first day of winter and the first day of spring (eg, December 21 to March 20), the definition of winter backpacking that I use to guide my gear decisions is more accurately reflected by the lowest temperatures (as well as snow/ice conditions) that I am expecting to encounter on my backpacking trip. The rough definitions of backpacking seasons that I use are: