About 13 his morning.
sapf- Congrats on the 18! Don't worry that it was hard- it's hard no matter what, and especially at this point in your training cycle!
My 14 today were super hard too. I felt really stiff and my butt/hamstring/hip area hurt the entire way. But it didn't seem to get worse, so I just kept going. I think I didn't stretch and roll enough this week.