The phrase "few blocks" refers to a small distance. It typically means a distance that can be covered by walking for a short period of time, usually around a city or neighborhood.
Sentences with «few blocks»
This dress was so comfy, I ended up doing a small bit of exploring around the hotel and surrounding few blocks in it too. (ladyinviolet.com)
You know when you're almost done with the level but can't seem to hit those last few blocks? (playstationlifestyle.net)
Few blocked air from air vent being air vent mount and CD slot mounts did not hold up my iphone 6 well on bumpy roads. (thewirecutter.com)