The Sulphur Skyline Trail is a fantastic hike if you're in Miette Hot Springs area as it's a bit further from most of Jasper's main attractions. It offers stunning panoramic views of the surrounding mountains and valleys and you can finish it with a dip in Miette Hot Springs once you're back!
It's an 8 km round trip trail with almost 700 meters of elevation gain. The ascent is gradual at first, but becomes steeper as you near the summit.