The average time it takes for an average human to run 40 yards (approximately 36.6 meters) can vary significantly based on age, fitness level, and other individual factors. However, in a general sense, a fit and healthy individual might run this distance in around 5 to 7 seconds. Elite athletes or professional sprinters could do it even faster, possibly in under 5 seconds.
It's important to remember that running speed can differ greatly among individuals. Some people may be naturally faster runners due to genetic factors or extensive training, while others might have a slower pace. Additionally, factors such as the surface type (e.g., grass, track, pavement), weather conditions, and the individual's motivation and energy levels can influence their running performance.