Directions:  From Estes Park head south on Hwy 7 to Lilly Lake.  The trailhead for the Twin Sisters is on the east side of the road next to the Ranger Station.  Look for signs pointing to the trailhead.

The Twin Sisters Peaks located on the eastern edge of Rocky Mountain National Park are wonderful high peaks with very easy access.  The trail to the top is not easy, but the trail is clear, well graded, and easy to find.  If you are hiking this trail in the summer or fall, you will not be alone, but you won't care because the hike is incredible. 

From the Lilly Lake Ranger station walk up the dirt road for a little ways until you see the trailhead.  The trail then starts climbing up through the evergreen forest and it doesn't stop going up until the summit.  As you gain altitude the views get better and better.  There are cliffs and interesting rock formations along the way to keep you distracted from the climb.  

Once you break treeline, the views open up and the terrain becomes rocky and rugged.  However, the trail is well worn so keep going.  The trail skirts around to the east of the summits and then deposits you in a bowl surrounded by the actual peaks.  There is an old shelter and weather station here.  The trail continues up to one of the peaks, but you can easily explore the others as well.  From the western peak the view of Longs Peak is indescribable (see photos). This might just be the best view of Longs available.  

After some rest and relaxation at 11,000+ feet, head back the way you came.  A simple hike to extraordinary peaks.