This is the 2257th most frequent Japanese word.
走っ
"走っ" means "ran" or "running" in English.
Here, '走っ' is used as part of the verb '走っています', indicating ongoing action, describing a habitual activity.
彼は毎朝公園で走っています。
He runs in the park every morning.
'走っ' is part of '走って行った', indicating completion of the running action as part of a narrative.
学校に遅れていたので、彼女は急いで走って行った。
She ran quickly because she was late for school.
The verb '走り回る' combines '走っ' to depict the action of running around actively.