Make sure your bike is shifting properly and nothing is loose or rattling. Check tire pressure and set your bike in the right gear for the start of the race. Take the first 10 miles out easy, and ease into the ride. Remember to eat/drink during the ride.
5' wu and cd. 1/2 Marathon race. Break the race into 3 parts. First 5 miles are moderate effort, next 5 miles are up a notch on the effort level, and the last 5k are hard. Pace yourself, and think nutrition!! Especially when you are done.
1/2 IM Race
Warm up for 10' and race a 2.1k- (warm up for at least 500 yds) - if you can - throw in a few 50s - just to get your HR up and ready to race from the get go! Pick a straight line, get on some fast feet and Good Luck!