Running is moving faster than walking so that, for brief moments, both feet are off the ground, and it is also the name of the sport or activity built around this movement.

What “running” means

  • As a movement: Running is a way humans and many animals move quickly on foot, using rapid steps and an airborne phase where neither foot touches the ground.
  • As a sport: Running refers to doing this movement deliberately for exercise, competition, or recreation, such as long‑distance or sprint running.
  • As everyday exercise: People “go running” to stay fit, manage weight, and improve heart and lung health.

Key features of running

  • Speed: Faster than walking, often measured by pace (time per kilometer or mile).
  • Gait: Includes an aerial phase where both feet leave the ground in each stride.
  • Use: Done in many contexts—track racing, road races, trail running, and casual jogging for health.

In simple terms, walking always has one foot on the ground, while running has moments when both feet are in the air.

TL;DR: Running is a quick, airborne-footstep way of moving on foot, and it’s also the sport or exercise of deliberately doing this for fitness or competition.

Information gathered from public forums or data available on the internet and portrayed here.