I just started track cycling, and I'm finding that the stress is aggravating shin splints that I had about 10 years ago.
Anybody else experience similiar?

Any suggestions besides stretching the calves a bunch?
So far this seems to help some.

My experience won't help you with such a short ride as track racing as it takes about 3 hours for it to bother me and my remedy won't work in your case. It sounds like you have a chronic condition if it flares up so soon. You probably should check with a doctor that is familiar with sports injuries. He might suggest something as simple as taping or ace bandaging the areas bothering you, considering the length of the ride.

You need to strengthen the muscles in your shin possibly, also. You shouldn't really get shin splints doing anything involving cycling. Go to the gym or something sit on the floor and hook a thing up to your foot and pull your toes towards you and it will strengthen it.

I get them a lot too - my fixed gear only hurts them though when they are flared up from running.

The one thing that has finally seemed to work is the strengthing i have been doing. When you are sitting in a chair, legs in front of you and 90 degree in knee (normal desk posture) raise your toes off the ground (heels grounded) as high and as fast as possible for a minute. do the same with your heels. I have been doing this twice a day and it really helps.

another tip is for movement - when you are sitting in chair, hold one leg straight out and draw the alphabet in the air with your big toe, moving only your foot, not your whole leg.