To sprint or dash at full speed; a rapid run or sudden burst of running (noun; can be used as a verb with する).
最後の直線で彼は全力で疾走し、ゴールを先取した。
In the final straight, he sprinted with all his strength and took the lead at the finish.
緊急車両がサイレンを鳴らして街中を疾走した。
The emergency vehicle dashed through the city with its siren blaring.
子どもたちは校庭を疾走して遊んでいた。
The children were running around the playground at top speed.
彼は最後の100メートルを疾走して逆転勝ちした。
He sprinted the final 100 meters and achieved a come-from-behind victory.