Thanks, that helps. Yes, we'd be doing Grand Canyon one-way R2R, not round-trip R2R2R.
It sounds like you've done some very challenging hikes and runs.
I'm surprised you found R2R2R to be easier than Mt. Whitney. By the numbers, R2R2R looks much harder: 42 miles and 10500 feet of climbing, vs "only" 22 miles and 6100 feet for Whitney. Plus R2R2R puts the hardest part last, when you're already most tired. What do you think made R2R2R feel easier than Whitney? The lower altitude? Better trail surface?
Hi Steve,
Not sure what route your are planning, but the South Kaibab route is 41.2 miles
roundtrip, or about 21 miles one way, approximately the same distance as Mt. Whitney MT roundtrip. I've done both, and agree with DUG. Altitude is the difference, although as you point out the R2R does finish "Uphill". Be very sure to take sufficient food. You will need the energy to get out of the canyon (based on my experience).
