Physiological Study In Relation to Exercise and Actualphysical Demand During Event Is Very Important to Critically Understandphysiological Basis of Performance. the Fatigue Causing Factors Workload,Recovery Pattern from Fatigue Etc. Should Be Very Specifically Understood Inreal Terms. Understanding This Background, the Research Scholar Took Up Research Project to Investigate In- Depth Anddetailed Physiological Responses of Two Long Distance Running Events 5000Mtsand 10.000Mts.For the Purpose of This Study Heart Rate, Respiratory Rate Andvo2 Max. Were Chosen As the Indicators of Physiological Responses and Fatigueof Long Distance Runners. the Cardio-Respiratory Parameters Were Indicators Aswell As Basis of Aerobic and Anaerobic Performance Capacity. Comparison Ofmaximum Oxygen Consumption (Vo2 Max.) of 5000M and 10000M Distancefor Assessing the Maximum Oxygen Consumption (Vo2 Max.) Cooper’S12-Minutes Run/Walk Test Was Administered and the Distance Covered In12-Minutes Was Recorded and Put In the Formula to Calculate the Vo2max. In Ml/Kg/Min. (Vo2 Max.)= (D12 -505)/45. Where D12 = Distancerun In 12- Minutes. In Order to Analyze the Data Descriptive Statistics Andindependent- Test Was Applied and Level of Significance Was Set at 0.05Level.It Is Evident That T-Value Is 1.32 Which Is Not Significant at 0.05 Levelwith 18 Degree of Freedom. It Indicates That Mean Scores of Maximum Oxygenconsumption (Vo2 Max) of 5000 Mts and 10,000 Mts Runners Do Not Differsignificantly. Thus, It Im ...