Can an endurance bike handle gravel roads?

Smooth, well-maintained gravel roads are within the capability of an endurance bike with 32–35mm tires. However, endurance bikes lack the tire volume, geometry, and mounting points for sustained rough gravel riding. If your rides include more than 10–15% gravel, an all-road or gravel bike is a better choice. For occasional smooth gravel sections on otherwise paved routes, an endurance bike with 32mm tires at lower pressure works well.