Well it's actually an 8 mile round trip to that particular shop (I live in a village which doesn't have a shop so I have to do at least 3 miles to get to one) but I always like to extend the journey a bit.
The thing is, my 1000 miles per month target requires me to cycle 32 miles per day.
Just going out and cycling 32 miles is just too boring for me, and too repetitive.
I try to break it down into two separate rides, usually one 15 miles, one 20 miles. Both of these rides need to have SOME purpose, even if it's as minor as buying some milk or a baguette or something.
So this morning's 14 miles was the run to church (which is 5 miles away) and this afternoon's 20 was the milk run (which is 4 miles away), if that makes sense.