Moms aged 35+: how long was your labor?

Im curious if labor is longer or shorter on average for older moms who've already had at least one baby. 
I will be 41 when our baby is born, after having two babies in my 20s. 
1st I was age 20: 18hrs start to finish
2nd I was age 25: 3hrs start to finish
They "say" each baby is quicker but I'm way older and it's been 16 yrs since my last baby. O_o 
Tell me your stories!