Our 10-11 month old chocolate lab/something else big went for a run today.  A local younger gal occasionally runs past our place and he decided to follow her home today.....8 miles and numerous corners away.  Her stepdad called at 4:15 and asked if my dog was at home and I soon realized he was not.  Took my son and went to get him (the gal happened to be his substitue kindergarten teacher).  He hopped in the pickup and happily came home....I hope this is not a recurring thing.