Plasencia was the head cross-country and assistant track and field coach at the University of Minnesota, until his retirement in 2021, where he won three Indoor Big Ten Track and Field Championships (2009, 2010, 2011) and two Outdoor Big Ten Track and Field Championships (2009, 2010) .[3]
Achievements
All results regarding marathon, unless stated otherwise
Note 1: In 1888 both the NAAAA and the AAU held championships
OT: The 1920, 1928, 1932, 1992, 1996, 2000, 2004, 2008, 2012 and 2016 championships incorporated the Olympic Trials, otherwise held as a discrete event.
2020 OT: The 2020 Olympic Trials were delayed and held in 2021 due to the COVID-19 pandemic.
Distance: Until 1924 the event was 5 miles; from 1925–27 and from 1929–31 it was over 6 miles.