 In terms of competition rules and physical demands , long distance track races have much in common with middle @-@ distance races , except that pacing , stamina , and race tactics become much greater factors in performances . However , a number of athletes have achieved success in both middle- and long @-@ distance events , including Saïd Aouita who set world records from 1500 m to 5000 m . The use of pace @-@ setters in long distance events is very common at the elite level , although they are not present at championship level competitions as all qualified competitors want to win . 
 In terms of competition rules and physical demands , long distance track races <a href='got' title='1'><mark>have</mark></a> much in common with middle @-@ distance races , except that pacing , stamina , and race tactics become much greater factors in performances . However , a number of athletes <a href='been_done' title='2'><mark>have</mark></a> achieved success in both middle- and long @-@ distance events , including Saïd Aouita <a href='null_relcl' title='3'><mark>who</mark></a>set world records from 1500 m to 5000 m . The use of pace @-@ setters in long distance events <a href='drop_aux' title='4'><mark>is</mark></a>very common at the elite level , although they <a href='negative_concord' title='5'><mark>are</mark></a> <a href='negative_concord' title='6'><mark>not</mark></a>present at championship level competitions as all qualified competitors want to win . 
In terms of competition rules and physical demands , long distance track races got much in common w/ middle @-@ distance races , except that pacing , stamina , and race tactics become much greater factors in performances . However , a number of athletes done achieved success in both middle- and long @-@ distance events , including Saïd Aouita set world records from 1500 m to 5000 m . da use of pace @-@ setters in long distance events very common at tdaelite level , although they ain't present at championship level competitions as all qualified competitors want to win .