Three Isle Lake is a 14.4 mile out and back trail located near Alberta, AB and is rated as moderate. The trail is primarily used for hiking and is accessible from July until September.
Spent 2 nights up at Three Isle Lake in 2014 with my kids. A few steep sections while climbing the head wall, but the lake is well worth it. Lots of day hikes available using the lake as a base camp
Hiked it on a rainy/misty day to the Point camp ground and to the falls.
Lots of up-hill (obviously). The trail is wide and easy until you reach the slip. There's and upper path which is generally easier. The lower path takes you over a large rock slide and a rough trail. Both trails meet up again.
There's pika in that area as well as we saw two. There's also many grizzlies and black bears in the area. Not to mention golden mantled ground squirrel who are very clearly bagging for food. DO NOT FEED WILD ANIMALS for their own sake...