A "day trek" refers to a journey or hike that is completed within a single day. It involves going on an outdoor adventure, exploring and enjoying nature, and then returning back to the starting point all on the same day. Full definition
It was really back to basics as we went on a 4 - day trek deep in the jungle. (adventureinyou.com)
Before starting our trek we will organize our backpacks and make sure we have all that we need for the first day trek. (inkaltitude.com)
The two day trek looks like it would be perfect for me, but let me know if you decide to go back a third time for the longer one — I'll train! (thatbackpacker.com)