Race...No more racing, its time to train

Well I ran a 10k race this morning and did exactly what I set to do. I wanted to go out fast and see how long i could hold it. Well i went out in 4:45/9:35 and then started to hit 5:20s to finish with 31:55.
I was going to race again on saturday but I have decided that I need to start building up for the half and stop running times I should be able to tempo. I plan to bike for a few days and then start building up to 85 if my groin can handle it.