2016-17: Ran a season best 1:55.49 in the 800m at the Virginia Quad ... Went 4:05.97 in the 1,500m run at the Colonial Relays.
2015-16: Put up season bests of 1:54.50 in the 800m, 4:05.86 in the 1,500m, and 4:25.33 in the 1 Mile run.
Personal: Theiss comes to Columbia with personal bests of 1:53.96 in the 800m, 2:30.35 in the 1000m, and 4:18.57 in the 1600m ... Plans on majoring in economics at Columbia College ... The son of William and Margaret Theiss.