In or toward the front; in advance. The car moved ahead of the others in the race.
Having more points, votes, etc. than someone else in a competition, election, etc. Barcelona was ahead after ten minutes.
Making more progress than someone else. All the children in the class are doing well, but Sophie is way ahead.
In the future; in time to come. We have a lot of work planned ahead for the next month.
Earlier than or before someone or something. It was already 10 a.m. in Moscow when the news broke in London that morning, because Moscow is three hours ahead.