Has anyone done century bike rides on a gluten-free diet? I have been a long time cyclist but I was hit by a van before getting diagnosed with Celiac. It took me about 6 years to start bicycling again. I am on Dr. Fasano's diet (basically no grains and only whole fresh foods -nothing processed). I find it difficult to do longer bike rides (over 2 hours) because of the food requirements. Has anyone found food to sustain you on longer rides, centuries, or even runners doing longer runs/marathons?