It's only been 24 days since Conor McGregor shattered his left leg during the Dustin Poirier trilogy fight ... but The Notorious is already standing on the busted limb.
TMZ Sports has obtained a photo of McGregor outside of a Beverly Hills hotel ... rocking a walking boot, standing while chatting with a friend.
We're told shortly after the photo was taken, McGregor sat on his scooter and rode into the hotel gym -- where he put himself through a workout.
It's pretty damn impressive .