<<Disclaimer: Verify this information before applying it to your situation.>> Hello, I have skiied, skated, swam, walked and done bikathons with diabetes. In those days I was using two types of insulin to control the sugars. I have since changed medication. I now use a fast acting insulin at meals(out of your system after an hour) and slow acting insulin at bed time. Anyone out there with similar medication and drive to do sports? I would like to know how you modify your dose if you go for say a 4 hour bike ride, that is only interrupted by a 20 minute lunch break. What do you do for the morning dose? What about the lunch dose? Thanks * Please remember some posters may be WHEAT-FREE, but not GLUTEN-FREE *