Famous In A First Birth, The Average Length Of Active Labor Is: References
active average birth first labor lengthFamous In A First Birth, The Average Length Of Active Labor Is: References. Human labor and birth (5th ed. In figure c, the cervix is 60% effaced and 1 to 2 cm dilated.

The cervix fully dilates to 10 centimeters. Dilation typically happens more rapidly in active labor than in early labor, your cervix dilates to 6 to 8 centimeters. For many people giving birth for the first time, active labor typically lasts 4 to 8 hours.