MAS and Running Zone Calculator

The 2.4km (1.5 mile) Cooper Test time trial is the gold standard for establishing your aerobic baseline. Unlike generic timed runs, this test cuts through the noise to reveal your true Maximal Aerobic Speed (MAS) and VO2 Max. It’s the most effective way to calibrate your fitness engine without a lab—giving us the precise data we need to build your custom training zones.