Planning a trip requires more than simply deciding where to go and when. Whether it's a weekend trip with friends, a formal outdoor program, or a major expedition, you need to evaluate your trip across a number of categories and develop a solid plan. One or two people may take on the role of planner, or the process of planning can be spread out among the entire group. I've planned and run trips for thousands of people both around the United States and around the world. Here are the elements you should keep in mind when planning any trip.