Sawtooth is a glorious peak; nice hike, interesting rocky summit and great 360 views.
There are multiple hikes to reach Sawtooth. I took a route from the west, following the High Divide trail to the Windy Pass trail. This was the approach with both the shortest drive time and hike (from Diamond lake). It was 4 miles and 1700ft one way. It does seem to be a less commonly followed route, though the trails are maintained.