drymax has an unmatched pedigree in trail running. Athletes wearing drymax socks have set world records as well as course records at the top ultra trail races in the world, including the Male & Female course records at The Western States 100 Mile Endurance Run. Purposely built, each trail model differs depending on course conditions, shoe fit, and distance. Lite Trail Running is preferred for a shorter distance in fair to moderate conditions. Trail Running is a heavy-duty, densely padded sock for more challenging conditions. The Maximum Protection Trail Running sock is for the toughest conditions and extreme distances.