Any type of movement in a dream symbolizes motivation, drive and determination as you move through changes. You can be chasing a bus (conformity) as the idea of wanting to do or have what others have. You can be chasing other characters as you attempt to integrate the potential associated with these characters. The fact that you are running shows that you may feel behind or late in terms of life stages. If others are chasing you - there can be an emerging identity or new way of being that you have not yet integrated or feel comfortable with. See Attack or Being Chased.