noun
first or solo run in a race
Used in contexts such as grand prix, horse racing, or other competitive racing to describe a run that is either the first of a series or done alone without competitors.
彼は単走でコースレコードを更新した。
He set a new course record in a solo run.
予選の単走で好タイムを出した。
He posted a good time in the first run of the qualifying round.