MAX VO2 functionally represents the maximum amount of oxygen that can be removed from circulating blood and used by the working tissues during a specified period. World class endurance athletes generally have high readings. See the listing on the results sheet to your query.

Although precise measurements are done on a treadmill with equipment measuring oxygen uptake, you can estimate yours from a recent running race. The race distance should be between about one mile and a marathon (or about 1500 meters to 50 km). Distances outside this range will not give meaningful results, since performance is limited by factors other than VO2 MAX.

You can also use this form to predict your performance at other distances. Once you find your VO2 MAX, try entering times for other distances that give the same value. As an example I (Ken Parker) have used this formula to estimate my VO2 MAX for my PBs from 1500M to the Marathon. The results were: (1500M - 4:24 - 62.9) (3000M - 9:36 - 61.63) (5000M - 16:59 - 60.26) (10K - 35:30 - 59.73) (Marathon - 2:42:45 - 60.22). My actual VO2 Max as calculated on several occasions in the Ottawa U lab during the time of these performances was 62.5.