The term 'WENT BACKPACKING' can be summarized by the crossword solution 'HIKED, ' which is a five-letter word. Hiking is an outdoor activity that involves walking on trails or paths in nature, often with a backpack filled with supplies. Backpacking is a type of hiking that involves carrying all of one's supplies and equipment in a backpack, and often involves camping overnight in the outdoors. Therefore, 'WENT BACKPACKING' can be summarized as 'HIKED, ' meaning to go on a long journey in nature with a backpack full of supplies.