Round-trip distance is 20-22 miles, with about 4,00 feet of elevation gain. 7.5 miles and 2,500 feet or on the beautiful trial to Two Medicine Pass. The off-trail portion is uncomplicated, with a short, obvious class III gully providing access to the marvelous summit. Many extremely strong, experienced GNP hikers I know have completed Grizzly in a day, and the consensus is that it's a long, tiring slog. It's certainly doable, but you're probably looking at a 10+ hour day.

I climbed Grizzly in July 2013 after spending a beautiful night at Cobalt Lake. This is undoubtedly the most enjoyable way to summit. Cobalt Lake only has 2 backcountry sites, and it's a wonderful destination, so availability can be problematic. But if you're able to snag a site, you can wake up early, string up excess gear at the campsite and be to the top of Grizzly in less than 4 hours.