Thank you bhashiguchi, that is exactly what I needed. I didn't think about the insulin on board. Dumb me. I will get some gatorade and try lowering my basal rate 30%. At least that is a starting point.

Yesterday, I did almost a 30 mile ride and have had lows now since the ride. Stopped half way and blood sugar was 54, ate a scone and some tea with no bolus and at the end of the ride, I was 87. That was good stuff only three hours later I was in the 40's.

Such a balancing act and some days you just don't know how far you might ride. I have read pumping insulin, but will look for the Diabetic Athlete.

Thank you! You gave me a starting point to work from.