He finished fifth in the 1,500 at the 2014 and 2015 U.S. Outdoor Track and Field Championships .
Palmer has run a personal - best 3 minutes , 36.98 seconds in the 1,500 and 3 : 56.7 in the mile .
Palmer finished fifth in the 1,500 at the 2014 and 2015 U.S. Outdoor Track and Field Championships .
Palmer has run a personal - best 3 minutes , 36.98 seconds in the 1,500 and 3 : 56.7 in the mile .