I have to wonder why they decided to call this specific drop Upper Copeland Falls. Along Copeland Creek, there are actually multiple drops. The drops that have been designated Upper and Lower Copeland Falls are large enough to be considered more than cascades, though they are other drops on the creek that are just as large (or small, depending on how you look at it). The main reason to visit Upper Copeland Falls is more for the scenery along the hike than it is to see these two falls. Calypso Cascades and Ouzel Falls, which are further along the trail, are also far more interesting.
1) Drive north on CO-7 past Allenspark. A few miles after passing Allenspark, you will see an entrance for Rocky Mountain National Park indicating the Wild Basin Trailhead. Turn left here.
2) Drive down the road for a very short distance to the park entrance. You can pay the entrance fee here.
3) Drive down the rather narrow dirt road to the very end. This will be the parking area for the Wild Basin Trailhead. It may be advisable to arrive early in the summer, as the parking area only has 20-25 parking spaces.
4) From the parking area, begin walking on the Wild Basin Trail. The sign for Upper Copeland Falls is very clearly marked.
Where in the World is Upper Copeland Falls?: map