Time (hh:mm:ss) Calculate Share . This would give a 400 metres time of 47.9 seconds. the next four-week cycle to address any limitations. Enter Your 100m Time, the Training Distance, the Training Efforts and then select the "Calculate Time Window" button. Copyright 2014 - 2020 The Calculator .CO   |  All Rights Reserved  |  Terms and Conditions of Use. Determine how fast your pace should be if you have a certain finish time for a desired distance or race. Click 'Age-grade' to calculate age-grading. medical examination to ensure it is safe for you to do so. needs of the athlete and take into consideration many factors: gender, age,