Thanks for posting the link Kurt.
Nice pictures. So as someone who has done Whitney a bizillion times by many different routes. What's your take the rim to rim,vs Whitney's standard route?
We're looking at October for our foray as was your trip.
Do you remember how long it took you?
The "field surgery" pictures with the swiss army knife look interesting.
Any thoughts or opinions on the rim to rim to rim,would be appreciated.
Brian
Hi Brian thanks for the note. I loved hiking the Grand Canyon Rim to Rim. I've often thought this would make a great hike to organize on this message baord. With a large group some could start at one end and others at the other. When they meet they could trade car keys. Those who wanted to take it slow could do an overnight backpack starting a day ahead and hike out with the day hikers. Anybody feeling super motivated could go Rim to Rim to Rim and do the second half with some people doing Rim to Rim. At the end we get a big camp site, build a big fire, and have a massive barbecue. OK the seed has been planted

.
There are some key differences between Whitney and the Grand Canyon. Here are a few of them to consider:
(1) Altitude. Whitney is much higher and in this sense Whitney is harder.
(2) Elevation gain in lost. Whitney goes uphill for the first half & down for the second half. The Grand Canyon starts by descending, goes more or less level for a while, then finishes with a big ascent. I think the Grand Canyon is harder in this sense because you're doing the uphill at the end when you're the most tired.
(3) Temperature. The Grand Canyon has the potential to be quite hot. On Whitney if it gets cold you can add layers but you're never in danger of hitting anywhere close to the high temperatures experienced in the Grand Canyon. When it's hot you can only strip down so far. Having ways to cool yourself are important to have plus LOTS of water. In this sense I think the Grand Canyon is harder.
(4) Distance. Whitney is 22 miles round trip. The Grand Cyn is either 21 or almost 24 miles depending on which trails you use. In this sense I'd say they're equal.
(5) Terrain. The Whitney Trail has nice sections and other areas that require stepping over rocks, especially up high. As trails go I think the Whitney Trail is rather rugged in spots. The Grand Canyon trails are good the whole way. In this sense I think Mt. Whitney is harder.
(6) Water sources. Whitney has nice creeks to get some of the best water on the planet. The Grand Canyon has spigots in a couple key places but in general you should carry much more water with you. Staying hydrated is a challenge in both environments but I would say it is more difficult to stay hydrated in the Grand Canyon.
Overall both are endurance days. In spite of the various differences I'd say the Main Trail on Whitney is probably a little harder but I could see making good arguments either way.
I did the hike with my long time best friend who lives in Tempe. He got blood blisters underneath is two big toes. I had to heat up a blade on my Swiss Army Knife and drill holes into the nails on his big toes to relieve the pressure. It was instant pain relief. He hiked much slower than he otherwise would have though because of the discomfort of his feet. It took us 16 hours. I remember him asking me as we crested the South Rim at the end of the hike how long I thought it would have taken me by myself. I looked back and thought a minute and estimated 9 hours. That would be hiking pretty fast. I tell people to allow 12-16 hours for the hike.
In general in the mountaineering world it's best to get as "training specific" as possible. In other words, hiking is the best training for going hiking. Three things I'd focus on to train for this hike:
(1) Take long hikes. Get your body used to some good endurance days and consider routing your training hikes so you get some solid uphill at the end of the hike so you can feel what it's like to go uphill when you're tired.
(2) Practice hiking in warm climates if you have that option where you live. For example, instead of getting an early start for a Saturday morning hike consider taking a few in the afternoon when it's hot. Getting out on a few desert hikes is great too if you have that terrain available to you.
(3) Get your footwear dialed in. Blisters will slow you down and make the hike miserable.
Let me know if you have more questions.