@jonathanbirchman and @casselliott13 run in a heat of the men’s 400 meters at the @uwtrack Indoor Preview on 30 January 2021. : : ©️2021, Paul Merca. All worldwide rights reserved. : : #nikond750 #nikonsportsphotography #nikonsportsphotographer #paulmerca @uwathletics @mondosportusa @adidasrunning @adidas #threestripelife #heretocreate @nikonusa @runnerspace #ncaad1tf #400meters