As President Trump's administration faces a whole brouhaha over newly released details in the disputed "Epstein Files" over the last week ... we're getting a peek at Jeffrey Epstein's one-time girlfriend and co-conspirator Ghislaine Maxwell warming the track at the Florida penitentiary where she's doing time.

Check out these pics and video ... Maxwell's getting some brisk outdoor exercise at FCI Tallahassee, where she's currently serving a 20-year prison sentence, with lots and lots of barbed wire as a backdrop.
Maxwell was accused of soliciting and grooming minors for abuse and sex crimes from 1994 to 2004 .