Yes, potatoes can be a good fuel source for cycling. Potatoes are a good source of carbohydrates (the preferred fuel source for working muscles), are easily digested, and offer similar performance improvements to sports gels [1
]. Potatoes can be a viable, whole-food alternative to the ingestion of gels during training and competition, and can help top-off and replete carbohydrate stores pre- and post-workout [1
]. Potatoes are also a rich source of potassium and when consumed after a long ride, can help replenish potassium lost through sweat.