as fast as one's legs could carry one

Adverb

not-comparable

(simile) At top speed (running on foot); as fast as possible.

Japanese Meaning

全力で走るさま。走れる限り速く走るという意味。 / 限界まで速く走ること。

He dashed across the field as fast as one's legs could carry one to reach the shelter.

彼は避難所にたどり着くために、足が運ぶ限りの速さで野原を駆け抜けた。

Sense（1）

(simile) At top speed (running on foot); as fast as possible.