The second picture is only a small fraction of the people that go there. I crawled up Mt.Fuji in August it took me 8.0 hours to get to the area to view the sunrise. The summit is another 1/2 hour or 45 minutes past this. This is a very easy hike except for the scree, the problem is the hordes of people. Once you near the last couple of miles, you literally take two or three steps and wait a minute or two for the people to move. I started at 8:00 PM and arrived around 4:00 AM. The distance and altitude is equivalent to hiking to trail camp. I did four, day hikes this summer, and here were my times to the top.
Half Dome up the mist trail 4.25 hrs.
Mt Shasta Bunny Camp to Summit 10.45
Mt. Fuji (view sunrise, not summit) 8.25
I have hiked to the top of Mt. Whitney 8.30 just got back last weekend from Whitney was not feeling good and tuned around at the cables after 5 hours. If you need more info for Fuji let me know.