I am coming off of 4 weeks of no running thanks to an injury and was just starting to build back up my mileage and do harder training after a winter spent suffering from another injury before I took this time off. I have been swimming, biking and doing strength work during my 4 week off period but have been good and haven't run. Assuming I live in a perfect world and my injury is gone and a new injury doesn't rear it's head (big assumption, I know), is it possible to go from no running to PR running? And a bit more background, my PR was obtained with a lot of hard work last year (a few 100+ weeks, tough track workouts and brutal tempo runs) so it's not even close to being a fluff PR (for me) to take down.

And yes, I am just desperately searching for someone to validate my goal as my confidence wavers as I struggle with whether it still makes sense to go for it.