Challenge kids to find things that are fuzzy, small, rough, bumpy, smooth, big, soft, sticky, squishy, lumpy, wet, living, growing, round, triangular, moving, make noise, hard, smelly, etc.
Start at the beginning of the alphabet and identify something on the trail that begins with "A" then work your way through all the letters in the alphabet.
The Never Ending Story
One person begins to tell a story and then passes it along to another person to continue the plot and so on. This is a great way to keep groups of kids hiking together, laughing, and being creative.
Think of a noun (person, place, or thing). Then the other hikers ask yes or no questions to figure out what the noun is. The hiker who guesses correctly gets to pick the next noun.
Try to identify things along the trail by the colors of the rainbow. Once you start looking closely for each color, your kids will be amazed at how many colors are in nature.
Think of a topic, such as professional baseball team mascots, countries that begin with the letter C, U.S. state capitals, etc. Each hiker takes a turn to identify something in the category. This continues to rotate through the group until a hiker cannot think of something or they repeat something that has already been said, then that person is out.