just that: the sand pit.
a sand pit
a stretch with a sand pit a at the end
Two events in athletics use a sandpit: the long jump, and the triple jump.
As far as I know, it's sand.
A jump is measured from the foul line to the first spot where the athlete touched in the sand pit.
It is about 0.33 m deep.
Runners run down a runway to a board 20 cm wide they must jump from without the planting foot crossing the plane of the board(forward) and land in a sand pit. From the forward edge of the board to the place nearest where the runner landed in the sand pit is the jump distance measured in meters. In the USA this measurement is in meters and/or feet.
it is soft
On average the Olympic pit is 24.75m2 on the top.
300 thousand metres
13-17in
It varies between different types of ages and skill level. Meaning that a school long jump pit would probably be different then a pit in the Olympics.