middle distance

noun
1.
Also called middle ground, middle plane. Fine Arts. the represented space between the foreground and background in paintings, drawings, etc.
2.
(in track) a race distance ranging from 400 meters or 440 yards to 1 mile.
Origin
1805-15
British Dictionary definitions for middle-distance

middle-distance

adjective
1.
(athletics) relating to or denoting races of a length between the sprints and the distance events, esp the 800 metres and the 1500 metres
noun
2.
Also called middle ground. part of a painting, esp a landscape between the foreground and far distance