You can do all three mountain towns in five days, if you're lucky enough to have that long.
Day 2 - Banff
For day 2, drive the short distance to Banff.
A good place to start is on Banff Ave. where you'll find the Visitor Information centre, where you'll be able to find out about all the seasonal activities available and hiking conditions. There's also lots to see just walking up and down Banff Ave.
One of the most popular hikes in the area is Johnston Canyon - it's not too strenuous and it's beautiful.
Johnston Canyon Lodge