On the longest day of 2014 Ben, Steven and I hiked into the Aster Lake region to attempt the 11,000er in the region, Mount Joffre. We've been planning this one since May, so it started out as a ski trip and ended up as a snowshoe trip due to the lateness of the attempt. Snowshoes just might be the way to go for this one as it couldn't have gone any better than what we experienced.
If you're doing Sarrail as a day trip from the Upper Kananaskis Parking lot, you are in for a fairly long day. The hiking and scrambling are fairly easy though, so it's doable for fit and fast parties. We did this trip on our way into the Aster Lake area for a few days of peak bagging the Kane peaks.