4x10K

4x10K refers to a relay race format in athletics, specifically in swimming and track and field. In this format, four athletes each compete a distance of 10,000 meters. This is a significant endurance challenge, particularly in track and field where 10,000 meters is already a demanding individual event.

In swimming, a 4x10K relay is an open water event. It tests the team's stamina, pacing, and ability to work together in a challenging environment. These relays are often part of larger open water swimming competitions.

In track and field, the 4x10K relay is a less common but extremely demanding format. It is a test of pure endurance and strategic pacing, requiring each runner to maintain a consistent, fast pace over a substantial distance. The cumulative distance of 40,000 meters makes it one of the longest relay events. While not a standard Olympic or World Championship event, it can be found in specialized endurance races or as a unique challenge. The success of a 4x10K relay team hinges on the individual capabilities of each runner and their ability to transition smoothly between legs. The sheer volume of running or swimming makes it a true test of aerobic capacity and mental fortitude.