There are two main types of buses in Denali - narrated trips (tour buses) and non-narrated trips (transit buses). In addition, a few free buses travel routes around the park entrance, connecting visitor centers and points of interest in the same area where visitors may drive their own vehicles.Non-narrated transit busesCheaper than tour buses, and more flexible in that you may disembark / re-board anywhere along the road, these are called transit buses. Transit bus drivers aim to help you experience the park on your own terms. These buses stop for wildlife viewing, restroom stops and beautiful scenery, just like tour buses. There are four choices of non-narrated trips, of varying length.