Nearly 4 hours (3 hours and 51 minutes according to my notes). I had a baby who was slightly back to back though and in a bit of a weird position before labour, so I imagine she was using that time to turn as she came out facing the right way. Plus, it's also the time that the midwives showed up and started unpacking everything and banging around and generally annoying me. I had a home birth and I'd spent the previous 7.5 hours just relaxing on my own with my husband checking on me occasionally. I was really relaxed and comfortable then and went from waters breaking/no contractions to fully dilated in 7.5 hours, but then it took another 4 hours to have my baby. I think if I'd been left alone longer, it would have been much faster. I was really comfortable though and not getting tired or feeling like it was unmanageable. It wasn't like 'lying on your back, turning purple' pushing for 4 hours though. I was just walking around my house and pushing when I felt I needed to. It was just one of those things that needed extra time. Had a totally natural, completely upright birth and she was born with me kneeling on our bedroom floor, no intervention needed. I did drink litres and litres of RLT and took the capsules from 30 weeks, so obviously didn't make much difference in my case! But I think they can probably only do so much when things just need extra time. I'd try them again next time.