30 Minute HIIT Treadmill Routine:

Time Speed
1-3 4
3-4:30 6.5
4:30-5 7.0
5-6:30 6.5
6:30-7 7.5
7-8:30 6.5
8:30-9 8.0
9-10:30 6.5
10:30-11 8.5
11-12:30 6.5
12:30-13 9.0
13-14:30 6.5
14:30-15 9.5
15-27 Repeat minutes 3-15
27-30 4.0
Total: 3.17 miles