Comment by aidenn0

It's only a very vague distance in many places in the US as well, but it's typically between 100 and 200 meters.

In Manhattan (a popular location for US mass media) a block running north-south is 80 meters, but an east-west block is variable and about 250 meters.

Chicago also uses a rectangular block, but with east-west blocks being shorter at 100 meters and north-south blocks being 200 meters.

Where I live, a block is 160 meters downtown (10 blocks to a mile).