Marathon performance in relation to body fat percentage and training indices in recreational male runners For male marathon runners, there are various characteristic features that correlate significantly with the competition time. On the basis of 126 finishers at the Marathon in Basel of 2010 and 2011, Prof. Giovanni Tanda from Genoa has classified the variable weekly training kilometers, running speed and percent body fat as relevant. With these variables you can now calculate with a same the marathon time relatively very precisely.The formula is: Marathon time (min) = 11.03 + 98.46 exp (-0.0053 middle weekly running kilometers [km / week]) + 0.387 middle running speed (sec / km) + 0.1 exp (0.23 percent body fat [%]). The whole article can be found under https://www.dovepress.com/articles.php?article_id=13175