Kudos to anyone who can do 160 OLD/ILT. When I spin my brains out (both legs, ~10 seconds) I probably get to 160, but no way with one leg.
I started doing ILT regularly last fall. Yesterday I counted it at about 115-120 and yes, the last 10 seconds hurt. But it feels pretty good for a minute or so at a mellow speed closer to 90 rpm.
As someone else mentioned, it helps if I focus on the back-and-up portion of the stroke -- hamstrings and hip flexors mostly. The "scraping mud off your shoe" image helps, too.