Including baths, where the children play for 15 minutes or so each it probably takes 45 minutes to an hour. Children are 4 and 2.
Not including baths, it's into pjs, brush teeth, wash face, have a wee/change nappy, story in bed, then sleep. Doesn't take more than 20/25 minutes to do both of them.
They do go straight to sleep though, both of mine are great for bed (after being very naughty babies who woke constantly and would only sleep nicely on me for the first year of their lives!).
This is partially down to 1) luck and 2) having a really strong routine that doesn't change.