Season is over and it is time to rebuild. Best way to do that is to focus on raw speed and strength. The new several months will have this focus. The following workout could be done a couple times in the week.
Warmup:
10 Minutes of a gradual build of pace/effort
Mainset:
15 Second Stride at Near Max Effort
4:45 Easy Running
Repeat 5 Times
Warmdown:
Aim for 5 minutes of easy running