rsbob 

I ran track in high school and continued to run to reduce work stress through my late-30s. Unfortunately running was a constant recovery from injury. I constantly pushed myself to greater distances and faster miles resulting in Shin splints, pulled muscles, increasing back pain. I loved going out for an hour and feeling well exercised. Ran tons of organized fun runs for best times. The injuries and pain made a transition to cycling easy. Cycling was great on the back, no shin splints and just occasional leg cramps on century rides. Cycling is as easy or hard as I want to make it, while running doesn’t afford the same amount of flexibility unless you consider jogging running.

I did limited running into my early 60s during the wet winter months to get a fast workout but after getting plantar fasciitis I gave it up completely. Now its 100% cycling combined with daily 3 mile dog walks and hiking.