The timetable is set partly so that you sleep during the boring bits and have daylight in the mountains.
At least it was when I did Chicago -> SF a few years ago. It was great, after the prairies you woke up in Denver & lots more people got on, spent a day going through the Rockies, sleep, and then a day in the Sierras. (I'm pretty sure we spent some of the night parked in a siding.)
At least it was when I did Chicago -> SF a few years ago. It was great, after the prairies you woke up in Denver & lots more people got on, spent a day going through the Rockies, sleep, and then a day in the Sierras. (I'm pretty sure we spent some of the night parked in a siding.)