I ran in it last year. The Expedition Everest Challenge is a 5k (3.1 miles) race, obstacle course, and scavenger hunt all in one event. You receive a bib with timing chip, running shirt, and goody bag prior to the start just like any other running event. The starting line is in the AK parking lot. The first mile runs around the perimeter of the parking lot. At the second mile you run into AK, along the west side of the park, and up a service road to Rafiki’s Planet Watch. The third mile is a return trip back down the service road, along the east side of the park, and back into the parking lot to finish nearly where you started. About every mile into the run you encounter the obstacles. In my race they were hay bales to jump over, tires to high step through, and a cargo net to climb over. The event is timed in two portions, the run/obstacles and the scavenger hunt. Once you cross the finish line for the run your time is recorded and you are given your first clue. The scavenger hunt takes place in the Oasis, Camp Mickey Minnie, Africa sections of the park. Last year all the clues were word puzzles that you had to figure out before moving onto the next clue, about 4 clues/puzzles in total. Each stage of the scavenger hunt had a few different variants of the puzzle so the person next to you may not have the same answer as you. Once you complete all the puzzles you are permitted to cross the final finish line into Asia and receive your medal (that doubles as a compass) and goodies. Your final time is the combined times of the run and scavenger hunt. The after party consists of Kali River Rapids, Expedition Everest, Dinosaur, a DJ dance party, the midway games, and character photo opps.