Running adds years to your life and life to those years

Danish researches presenting the results of the Danish Central Register found that regular running as exercise live an average of 6 years longer than their non-running (non-exercising) counterparts. 

Jogging was associated with a 44% reduction in the risk of death over 35 years, which translates into an age-adjusted survival benefit of 6.2 years in men and 5.6 years in women.

Joggers reported an overall sense of well-being, which isn't just about extending life, but living better.

The benefit was found in 3 cumulative sessions a week, totaling one to 2.5 hours a week.

European Association for Cardiovascular Prevention & Rehabilitation
Source reference:
Schnohr P "Jogging -- healthy or hazard symposium: Assessing prognosis: a glimpse of the future" EuroPRevent2012.