1. Go for negative split.
2. Get a fastish start before all the ground gets sloppy from the slower ones.
3. Try and stick to the path by the trees on the way up the first straight, it's harder ground usually.
4. When it begins to flatten just before the playground, you need to have the hjammer down and be up to 95% or so MHR.
5. You will lose time on the last corners, make sure you take the shortest legal line, you can save yards that way.
6. Nail for the line after the last tight right by the tree BUT.... watch for the uneven ground, it can turn your ankle at speed and game over.
7. Keep it nailed till you are over the line.
8. If it becomes clear to you that you are not going to make it, back off to help prevent injury for the next weeks go!
Good luck. All IMHO obviously