मनुष्य किंवा प्राण्यांना पाय वापरून वेगाने जाण्याची किंवा हालचाल करण्याची क्रिया म्हणजे धावणे होय. धावणे या क्रियेत दोन्ही पाय हवेत उचलले जातात. तर चालणे या क्रियेत पाय जमीनीला टेकलेले असतात.

Running is a method of terrestrial locomotion by which humans and other animals move rapidly on foot. Running is a gait with an aerial phase in which all feet are above the ground. This is in contrast to walking, where one foot is always in contact with the ground, the legs are kept mostly straight, and the center of gravity vaults over the stance leg or legs in an inverted pendulum fashion. A feature of a running body from the viewpoint of spring-mass mechanics is that changes in kinetic and potential energy within a stride co-occur, with energy storage accomplished by springy tendons and passive muscle elasticity. The term "running" can refer to a variety of speeds ranging from jogging to sprinting.