You marathoners amaze me! While I have been running for 17 years, I am a runner by force. Meaning, it didn't come easy. Lots of calf & foot pains & when I first started & I could barely run two blocks. My first 5k was a big deal. Now I run 4-5 miles which I do every other day & have minimal issues or pains, but it honestly took years before I truly got used to it. I think the body has a way of adapting once it realizes your not going to stop doing it. I run because I am lazy. I say that because I just have to put my gear on at 6:00am & get out the door. 40 minutes I am back home, & shower up for work. For you guys that can lift weights & do the elliptical, I give you a lot of credit. That takes way more discipline than running imo.
I run about 45-50 miles a month. A little less this time of year because of the environment. Can't stand the Dreadmill, 20 minutes on that thing feels like an hour.
Trained to do a half marathon 2 years ago & its been on my bucket list. But couldn't get past 10 miles. each time I was in agony & could barely walk the next day, so I gave that idea up for now. Just don;t have an efficient running style I suppose. cardio wise, no problem At 52, my best running days are behind me & my easy pace has fallen about 30-40 seconds a mile which makes me sad, but I quit fighting it. There's a reason the 50-60 age groups don't have huge turn outs. Its hurts a bit after 50!
1965gp, If you really want to go after it, I like Jerry's idea of getting pointers from a specialist. many will have you run on a treadmill to look at your gait, or mechanics.
That being said though. I am a firm believer in wearing a show that is comfortable, not one that is supposed to fit your form . I had been told by everyone under the sun I am a semi mild pronater & needed controlled, firm shoes. Did that for about 6 years & one day was reading about wearing shoes that feel right. Tried a bunch on & found that natural cushioned shoes felt the best & I have never looked back. My legs had never felt that good before the switch.