Walked/ran for abouty 60 minutes

I went south from the 100th South trail head and back, for a total of about 3.25 miles. I mostly walked the last mile. The temperature during my workout was 51 (F). Another beautiful Spring day. I've only been getting 5 1/2 to 6 hours of sleep each night, and it is showing in my feeling tired during the last part of a run.