pace around 6:58 for first mile. Then 7:26 for 2 miles.
Rested for 3 miles. Another two miles, a little bit slow
with 3rd mile pace 7:28; 4th mile pace 7:45. Then cool
down and back to FF.
I think I ran a little bit too fast for the first two miles. That's why
the 3-4 miles pace much slower.
Here are the splits: