Many runners sometimes try to avoid white flour because it makes them feel bloated (I do the same), and other people in Western countries favour brown rice, quinoa and amaranth. Furthermore, the rise in coeliac disease and gluten intolerance shows that wheat may be dangerous. For this reason, peoples in developed countries are eating other grains, such as quinoa, amaranth, millet, and sorghum, which are healthier. That's why rice production has more than doubled since 2000s around the world.
I always try to get carbs mainly through potatoes and rice before each running session. I have white flour at lunch twice a week. Do you eat more rice or white flour?
Post script: I took the picture above in the local market in my town. It has nothing to do with rice, white flour, carbs and running. It shows some types of beans: red beans, small purple, green beans, red speckled beans, white American type, long shape, ect. The picture is simply related to healthy food ... there weren't any beans labelled as organic production.