Anton's detailed report with many good photos is here: https://www.runnersworld.com/antons-mountain-musings/ten-mile-traverse
The pair ran from the Frisco TH to the Breckenridge TH in 4h15m, and from Frisco to the summit of Peak 10 in 3h26m.
Shouldn't this be considered supported?
I was confused about the guidlines, so I think they can claim unsupported, even though they ran together. Can't figure out how to delete comments.