One hundred and fifty years of sprint and distance running - Past trends and future prospects In recent years, the maturities in the sprint as well as medium and long distance have improved significantly. It looks so that women will be 10-20% slower even in the future than the men, a time of 9.50 over 100m is possible at the end of this century, occasionally, records of medium and long distance will be broken over the next 20-30 years andA marathon time of less than 2 h is probably unlikely until the end of this century. The very insightful analysis can be found under https://pubmed.ncbi.nlm.nih.gov/26088705/