Big Crow - Big Oops!

Looking to do a short hike after working as trailhead steward, I went to do Big Crow from O'Toole road, part of the Lake Placid 9 challenge.  I get to the lot, sign in at the register, and start hiking the trail next to the register.  After 15 min or so I start asking myself, am I on the right trail?  I thought this trail was only 0.7 miles and steep, but I've gone at least 1/2 a mile and it's been flat!  I check the GPS, and yup, I'm on the wrong trail, I'm heading towards Hurricane!  Oops!