The Mixed Team Relay (MTR) is a triathlon event for teams of 4 athletes: 2 women and 2 men. Each athlete completes a short-distance triathlon, typically around 300 m swimming, 6–8 km cycling and 1.5–2 km running, before tagging the next teammate.

The four athletes’ times are combined to determine the team’s final ranking. This short and intense format combines individual performance with a strong team spirit.