 The field of the stadium combines a number of elements for use in the jumping and throwing events . The long jump and triple jump areas comprise a straight , narrow 40 @-@ metre running track with a sandpit at one or both ends . Jumps are measured from a take off board — typically a small strip of wood with a plasticine marker attached — which ensures athletes jump from behind the measurement line . The pole vault area is also a 40 @-@ metre running track and has an indentation in the ground ( the box ) where vaulters plant their poles to propel themselves over a crossbar before falling onto cushioned landing mats . The high jump is a stripped down version of this , with an open area of track or field that leads to a crossbar with a square area of landing mats behind it . 
 The field of the stadium <a href='uninflect' title='1'><mark>combines</mark></a> a number of elements for use in the jumping and throwing events . The long jump and triple jump areas comprise a straight , narrow 40 @-@ metre running track with a sandpit at one or both ends . Jumps are measured from a take off board — typically a small strip of wood with a plasticine marker attached — which <a href='uninflect' title='2'><mark>ensures</mark></a> athletes jump from behind the measurement line . The pole vault area <a href='drop_aux' title='3'><mark>is</mark></a>also a 40 @-@ metre running track and <a href='got' title='4'><mark>has</mark></a> an indentation in the ground ( the box ) where vaulters plant their poles to propel themselves over a crossbar before falling onto cushioned landing mats . The high jump <a href='drop_aux' title='5'><mark>is</mark></a>a stripped down version of this , with an open area of track or field <a href='null_relcl' title='6'><mark>that</mark></a><a href='uninflect' title='7'><mark>leads</mark></a> to a crossbar with a square area of landing mats behind it . 
The field of the stadium combine a number of elements fa use in da jumping and throwin events . Tdalong jump and triple jump areas comprise a straight , narrow 40 @-@ metre running track wit a sandpit at one or both ends . Jumps are measured from a take off board — typically a small strip of wood ww/a plasticine marker attached — which ensure athletes jump from behind thdaeasurement line . The pole vault area also a 40 @-@ metre runnin track and got an indentation in the ground ( the box ) where vaulters plant their poles to propel theyself ova a crossbar before falling onto cushioned landing mats . The high jump a stripped down version of this , with an open area of track or field lead to a crossbar with a square area of landing mats behind it .