Background and Aims: Diabetes mellitus is a metabolic disorder which is increasing in older adults. The increasing proportion of elderly persons is contributing to an increase in the prevalence of diabetes. The aim of this study is to analyse the prevalence of Diabetes among active young and middle age subjects and active old age subjects in Hisar district, India. Material and Methods: A total of 400 subjects were screened from Hisar district, India who were physically active then they were allocated groups based on age group A (ranging between 25-50 years) and group B (ranging between 51-75years). A Glucometer device was used to check sugar level and 6 Minute Walk Test (MWT) was used to check fitness level because a higher value obtained in 6MWT is associated with an improved fitness level. Result and conclusion: Among the 400 participants studied, 43.5% participants were pre diabetics 32.5% were diabetic and 24% were non diabetic. Therefore, this study found that almost three fourth of the total population in all age spectrums had abnormal glucose metabolism in the form of either diabetes or Pre Diabetes. The prevalence of Diabetes was more in the older patient group. The differences between the two groups for 6MWT was found to be significant.