Two options:
- You can go at your own pace - yon don't need to be on the peak to have the view of the sunrise over the lake, the view will be incredible during the ascent when you look back. You must be back at the parking at 7 am or stay longer and take the train from Bilten.
- Trail running with me, I am planning on reaching the peak in max 1h45 to see the sunrise (> 800m gain / hour).
I leave at 3h20 am from Zürich Brunau, start at 4 am, sunrise at 5h45 am, go down at 6 am, and we either meet back at the car at 7 am or you take the train from Bilten.