12x400 with 45 seconds rest
1-77
2-72
3-73
4-76
5--74
6-73
7-72
8-72
9-73
10-72
11-68
12-67
My current 3 mile PR is 17:28 ran on a moderately difficult course, (some rolling hills in the middle) the course im running this weekend is perfectly flat, trimmed, and might as well be on a track. What do you think my possible time is for this weekend?