What is the longest lasting tornado ever recorded?

Question

and is the tornado that hit oklahoma still active?

Answer 1

The tri-state tornado was in 1925, and that was possibly one of the longest lasting tornadoes recorded

Answer 2

Officially, the longest lasting tornado on record was the infamous tri-state tornado on March 18, 1925.  It lasted about 3 1/2 hours and tracked for about 219 miles.