I was riding my mtn bike up boreas pass (1400' climb over 6.55 miles)
On the way up I was passed by a RUNNER .
I was going about 7 mph and at about 10,800 feet and a runner passed me. Sure even TDF riders get passed by runners for a short distance but this runner just kept slowly pulling away
At the top of the pass 11, 400 ' I saw him coming back down from one of the mtn peaks.
So he likely climbed from 10,300' - 12, 000' and back over 15 miles
with a 7.5 mph or better on the way up. that's one hell of an athlete
PS I did blow him away on the downhill!!