What is the origin of the idiom "in the long run" and when to use it?

The idiom "in the long run" has an origin that can be traced back to the mid-19th century. It draws on the metaphorical concept of a race or journey, where the focus is on the overall outcome or result after a significant period of time or distance covered. This expression is commonly used in discussions related to investments, business planning, personal relationships, health habits, and societal changes.