VO2Max is displayed if the necessary conditions for it are present: Limitations: - Kilometers run or started in the first 5 minutes are ignored. - The formula always refers to metric units. - Only km containing less than 30 m positive or negative elevation change per km can be used. - At least one whole km is required that meets all criteria for calculating VO2Max. - If more than one km meets the criteria, the maximum result is used. - VO2max is calculated only for running activities and challenge mode. For all other types of activities, no VO2max calculation is performed.