noun
time trial; time attack; race against the clock
Sports context: a competition where participants try to achieve the fastest time, often individually.
wasei-eigo (Japanese-coined English)
次の大会ではタイムアタック形式で順位を決める。
In the next tournament, rankings will be decided by a time attack format.
noun
speedrun
Video game context: completing a game or level as quickly as possible, often with recorded times.
彼はこのゲームのタイムアタックで世界記録を持っている。
He holds the world record for the speedrun of this game.