Park on the side of the road (E Lake Blvd.) where the Sugar Loaf trail-head signs have been placed by the city. Go up the driveway (for Edina Realty) across the street and up to another sign stating the start of the trail-head. After that, it's pretty simple just follow the trail up to the rock. The trail veers left for a while but makes a sharp U-turn going up along the bluff network.