I take the morning easy and study my maps. I decide to start with the obvious four-mile round-trip hike up to Teutonia Peak on the official trail and then follow that with a counter-clockwise loop around the west side of Cima Dome via Deer Spring.
I prepare my backpack for the day's hike. I decide to bring my water filter in case there's water at Deer Spring. I won't really be needing extra water, but it's fun to filter spring water when it's available.