anyone know the name of an old sailplane short film

many years ago, there was a soaring short movie that the TV stations
would sometimes use a filler late at night.
the plot was simple but striking: a man goes up in in sailplane.
another plane appears near him and kind of taunts him. he takes the
challenge, and what follows is some amazng aero-batics. they chase
each other all over the sky. in one scene, they fly low to the ground
even flying between trees so close together they have to bank to get
thru them. then they zoom up high. the pilot looks over at the chase
place to try to see who this other great pilot is, and he see's
himself in the other cockpit.

anyone out there remember this film? i'd like to see it again - in
color if it was filmed in color. B&W tv in those days. anyone know
the name, or something that would identify it enough to show up in a
google search???
thanks!