From Preston, head North East out of town. When you get to the north end of town stay right at the intersection toward Grace/Montpelier. Follow that till you get down to the river, about 5 miles. There will be signs to head toward Montpelier right at the river. Turn right and head up Emigration Canyon. When you get to the summit there is a parking lot on the right hand side of the road. Called Copenhagen. Park there and either follow the groomed road South toward Green Basin/Paris Flats or you can go North toward Sherman Peak and the 8 mile area. Hope that helps. Should be plenty of tracks to follow. The drive to the summit will be about 30-40 min outside of Preston.
Hwy #s are 34 out of Preston North and then the 36 East.
Hope that helps.