Depends on the amount of foreplay. But I would say 30 minutes or so.

It depends on when and what is going on. During the week on busy weeks, I can usually last an hour or so. On the weekends when we plan our marathons...three days with small nap breaks of about 30 minutes. Honestly--we do this about every other weekend. I think the lack of a good sleep and the anticipation all week prior to the marathon adds a lot to it.

Physically I can last forever. I haven't found my limit, so the only way I'll "tucker out" is if I get bored.

Sometimes my husband can last pretty long as well. Unless of course it's been a while, in which case it's usually a matter of minutes, or even a stroke-count.