The "100K Run" is a long-distance running event that covers a distance of 100 kilometers, or approximately 62 miles. It is often held on trails or roads and can be part of ultramarathon competitions. Participants typically train for months to prepare for the physical and mental challenges of completing such a distance. Runners in a 100K Run may encounter various terrains, including hills, forests, and urban landscapes. Events can vary in format, with some offering aid stations along the route for hydration and nutrition. The Ultramarathon community often celebrates these events, promoting endurance and camaraderie among participants.