The hike begins in the Mill B Trailhead parking lot as you follow a paved road east along the creek. The Lake Blanche trail branches off to the right about ¼ mile from the parking lot. In a few hundred feet, you will cross the stream on a bridge. The trail steepens into a steady incline as you head southeast up Mill B South Fork. In the spring months, you are likely to encounter snow along the ascent, and crampons or snowshoes are recommended.
The straightforward trail follows along the creek for about 2 miles, then gradually veers off to the left into a set of switchbacks. At the final switchback, you will encounter a daunting scree field. Fortunately, there is no need to cross it as the trail resumes a few steps above to the right. The final stretch of trail boasts views of massive granite cliffs and, as you approach the lake, the iconic Sundial Peak comes into view.
Lake Blanche's scenery is one of the best rewards of any hike in the Wasatch range. There are plenty of spots to rest at the lake, and if you are still feeling the wanderlust, the trail extends along the right side of Lake Blanche down to two more lakes, Lake Florence and Lake Lillian.