The Phillips Lake South Shoreline trail begins near the Southwest Shore Campground and ends near the south side of Mason Dam.
The trail traverses the southerly banks of the reservoir through grasslands and young ponderosa pine trees. It is a scenic trail and offers outstanding views of the lake and the Elkhorn Mountains. The numerous coves and inlets make it easy to see wildlife along the run. There are only short uphills on this trail and overall it is very easy. There is some exposure along the way peppering in a little excitement.
This trail can be runed with the Phillips Lake North Shore Trail
to make a large loop. You'll just need to run on Hudspeth Lane to connect the two trails at the west end and cross the dam at the east end.
You can also turn onto the Rim Rock Trail to get some extra miles.