Mark -
A few years back I walked up the road with Doug and a few others including Richard P. from where the gate is now installed. There was some snow, but up higher there was a beaten track so it didn't slow you down much. IIRC, it took us about 2 hours. Carried a daypack. So, how long it will take is probably related to how heavy your pack is. So, 5 hours should more than do it. You're a faster hiker than I.
Kevin
