It also depends on the heat and humidity (aka the heat index). We don't walk Peanut if it's over 90F. If it's just barely over and she is makin me insane we'll take her to the end of the block and back.
Depending where you live, your cutoff temp could be lower. I have seen some people say their cutoff point is 80F.
Since we live in a no snow zone, Peanut gets walked a lot more in winter than summer.
You have to work up to distance though.