Sifting though some of his mountain runs. No smoking guns, but a lot of interesting things.
At midnight on May 21, after a 5-6 hour break, he began his run up toward flagstaff. Grades vary from -1% to +5%, Elevation 6000+
He would run hard at 6-7:30 pace for 30-45min then rest or walk for 10-15min, assuming the RV is next to Rob as they claim it usually is.
The grade changes didn't seem to affect pace much at all, resulting in what would be an incredibly uneven effort. Altitude seems to have no effect either.
For example on 3 consecutive 12min sections he did:
1.6 mi @ 7:27 pace on a 4.6% grade (6:20 grade adjusted pace)
1.7mi @ 7:15 pace on a 0.5% grade (7:06 gap)
1.73mi @6:42 pace on a 2% grade (6:14 gap)
the data for the morning of the 21st with pace and grades.
https://docs.google.com/spreadsheets/d/1EK05chdpXR_tUxktL2k3QaJIslJaFuliYc7Uz4YrUsk/edit#gid=0
Either
a) he actually runs like that and he's an idiot.
b) he runs evenly but the tracker is in the van and is not near rob
c) he's riding in the van.