Lake Isabelle via Long Lake Trailhead is a relatively short hike with some amazing views. This trail is easy to navigate and well-marked. Plan for a few hours hiking.
Start at the Pawnee Pass Trail No. 907 Trailhead. Long Lake is about 2 tenths of a mile and Lake Isabelle is 2 miles from the trailhead. Keep an eye out for moose grazing in the bushes or in the water near Long Lake. This is a 4 mile out and back hike with well marked trails.
For an 8.75 mile hike, continue past Lake Isabelle to Isabelle Glacier. The hike to the glacier will change the rating from beginner to moderate-strenuous. If you don't want to go to the glacier but you want to see some waterfalls, then hike a mile past Lake Isabelle.
You will need $10 for the Brainard Lake Recreational Area parking. The parking lots do fill up so I suggest getting there early.