I'm confused. Well, that's not difficult, as I spend my entire life confused.
Went out today - icy pavements, so definitely walking slower. Did my usual route, which gets me to the warm down walk about 3 minutes from home. This time I was about 8 minutes from home. I worked out I wasn't running any longer than normal, so I guess I must have speeded up a bit.
Oh well, better shorten the route slightly as it's very cold walking home again.