warm.  it was already 85 degrees.  The route I chose was fairly hilly, more up than down.   First 10 minutes HR =149.
tempo run:
The first 1.75 miles  I did in 11:16.  HR=175
Last 2.74 miles I did in 14:44,  HR=184
Total 4.4 miles in 26 minutes. Average 5:54/ mile HR=180

Total Run 6.5 miles, 46 minutes 172 average HR

Did not meet my goal to hold 5:50 mile pace.  Could be the hills, but I still think I should be able to do it.