ベストタイム

noun

best time; personal record

Commonly used in sports and racing to refer to one's fastest recorded time; similar to 'personal best' in English.

• 今日きょうのレースでベストタイムを更こう新しんした。

  I set a new personal best in today's race.

• 彼かれのベストタイムは10秒びょう台だいだ。

  His best time is in the 10-second range.