According to Redditor Laxcc, it takes 11 minutes to run all the way across Fallout 4’s map. He or she provided video proof but it has since been taken down.

Fortunately, RedBeardedT has mirrored the trek, so you can see it here.

And while you're here, have some Fallout 4 screenshots, why not why not:

Apparently it takes 11 minutes to walk across Fallout 4's world