Cruz Culpepper, Aidan Fitzgerald, and Cal Banta make for the top three 400m-800m runners of 2019.
Who's got speed, and stamina?
The 400m-800m double isn't an easy one - it's the best combination of sheer sprint speed, and the endurance to hold the hot pace.
If the two mile is the hours-long cook in the oven, the 400-800 is the boiling of the egg. And this year the 400-800 doublers were top-pocket finds.
Cal Banta, Cruz Culpepper, Aidan Fitzgerald, and David Cardenas all had combined times within the same second - 2:44 to narrow it down.
That just shows how stellar this year's crop of mid-distance runners was.
Two events tallying 600 meters barely separated these four, and if it were a race, it'd be a lean that would go to Banta.
The Air Academy senior topped this list by a few tenths of a second, running 50.55 in the 400, and 1:53.48 in the 800 for a total of 2:44.03.
Typically the longer race would be the decider in these "combo" pieces, but Banta's 400 was over a half second ahead of the field, which gave him the edge.
Culpepper was an insanely close runner-up here, with a 51.25 quarter-mile, and a 1:52.93 half-mile, for a grand total of a 2:44.18. The Niwot junior was the fastest half-miler of the four.
Fitzgerald was the second-fastest quarter-miler of the quartet with his 51.23. Add that to his 1:53.45 and he's No. 3 on this list in 2:44.68.
Just under two-tenths of a second back is Cardenas, who has a 51.39 and 1:53.47 to his name for a total of 2:44.86.
And just on the other side of the second in fifth is Ian Kelly, who totaled at 2:45.44. His 50.26 400 tops the four in front of him.