What is the term for increasing pace to a sprint while running uphill?

The term for increasing pace to a sprint while running uphill is best described as a hill sprint. This refers specifically to the act of sprinting on an incline, focusing on the technique and effort required to overcome the additional challenge that a hill presents. Hill sprints are a popular training method among athletes and runners, as they help to improve speed, strength, and cardiovascular fitness.

Other options like uphill dash and incline sprint may suggest similar activities, but they are not as widely recognized as standard terminology in the context of athletic training. Mountain race generally refers to a type of event or competition that occurs in mountainous terrain rather than the specific action of sprinting uphill. Thus, hill sprint is the most accurate and commonly accepted term for this activity.