I woke up early in the morning and left the luggage at YHA lakefront. Compared to the last night, it is much better place. The beginning of trail is next to the skyline gondola ticket office. The track sign indicates that it will take 8 hours to return, and I spent almost the same time to finish.
The fist section of the trail is tiki trail to skyline gondola station, and it is steep but most of section is fully shaded by trees.
At the gondola station, continue to follow Ben Lomond Trail.
I spent a long break at the saddle, and continue to the summit. From the saddle to the summit, it is mostly rocky sections and steep.