And it's about the same distance from the KOA to the turn off of 50 @ Icehouse Road as it is from Icehouse Road to the trailhead.
Here's a google map image. I not sure how to link the placemark. If someone knows, let me know and I'll put it here. Or PM me and I'll email you the link.
(you will need to have the free google map software to open it
http://earth.google.com )
But here is the location of the KOA (bottom left by the N. arrow), the turn off to Icehouse Road, Loon Lake and Rubicon Springs.