MileSplit Staff May 22, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. 400m + 800m Rank Athlete/Team Class 400m 800m Combined 1 Nolan Thackwell Air Academy High School 2026 50.03 1:50.55 2:40.58 2 Andrew Heuton Broomfield High School 2026 48.35 1:52.30 2:40.65 3 Micah Sheehan Northfield High School 2027 47.60 1:53.63 2:41.23 4 Caleb Emery Rocky Mountain High School 2027 48.17 1:53.53 2:41.70 5 Dylan Smith Cherokee Trail High School 2026 49.42 1:52.62 2:42.04 6 Levi Smela ...