Wiktionary
pound the pavement
vb. 1 (context idiomatic English) To travel on foot; to walk or run. 2 (context idiomatic English) To campaign diligently; to seek something, such as business, employment, or answers.
Usage examples of "pound the pavement".
That way we can satisfy the old man's desire to pound the pavement without stumbling down the middle of the road like a bunch of drunks.
Scott Siegel, our agent, continued to believe and to pound the pavement ingeniously.