Is it really possible?

[kitty]

We have a dear friend that claims to have jogged rim to rim to rim in twelve hours. We do not wish to doubt him, but is this really possible?

[joebartels]

one of my employees does R-R in seven hours, but she said it's more enjoyable slower

sidhayes says he's done R-R in under 3 hours

Grand Canyon rim to rim crosssing in under three hours(2:52)

so by that R-R-R in under 12 is very possible, I guess, not for me!

think of a marathon, what do they do that in, the corridor trails are like big ramps, it's not like hiking Camelback

[montezumawell]

Yes, it can be done.

[Dschur]

My husband has done it from south to north in 9 hours and north to south in 7 hours. That is with a day rest enbetween. He will try rim to rim to rim next spring. We are heading up to the canyon today with a hike tomorrow. he will be practising for the Rim to Rim in 3 weeks. I will be just hiking one of the trails. He will be going down Kaibab and up Bright Angel...