How long?

My DD is nearly 4 and has been sleeping in her own bed in her own room since she was a little over a year. 95% of the time she falls asleep within 5-10 min. On the occasion that she's up longer than that, it's because she had a nap earlier in the day and thus isn't all that tired, or she had too much sugar right before bed, or some other problem. But normally, she just lays down and falls asleep.

It depends on the kind of day they've had, and also on how you define the question-- we have a long bedtime routine, but once they're in their beds, they usually settle down quickly, but sometimes they don't.

They go straight from the dinner table to the bath at 6. Then we get into PJs, drink milk, read stories, and hang out together for an hour. At 7, they're in their beds, DH sings and tucks them all in.

Some nights they're all asleep in ten minutes. Some nights the twins go straight to sleep, but DD1 is up an hour or more reading. Some nights they're all up and partying for an hour or so. It really isn't consistent. They settle down on their own when they're ready, so I mostly just ignore any playing I hear.

It's seeming like my kids do take a lot longer than average to settle. It takes about an hour to get them to bed, then another 1-1 1/2 hours for them to actually go to sleep.