"To pound the pavement" means to go out and physically search or look for something, such as a job, by walking or moving around a specific area. Full definition
Considering your figure is not tailored towards such demanding cardio, you won't be putting your genes to good use by pounding the pavement for excessive amounts of time. (womenshealthandfitness.com.au)
The reality of pounding the pavement in search of the perfect house can sometimes be a drag. (rismedia.com)
Long hours of pounding the pavement are hard on tires, so check each tire's tread for wear. (classicgaragedfw.com)