No, I don't need any diagnostics myself. I'm the sort of person who worked in mental health centers and taught grad students who were looking to have careers as counselors for many years, all of which requires a lot of familiarity with the process of diagnosing mental disorders. Ron does not come anywhere close to meeting any sort of diagnostic criteria for OCD.
A diagnosis cannot be made on the basis of a single behavior so you'd need more examples than simply going for a run each day for 52 years.On top of that, the behaviors need to affect a person's ability to function negatively. Ron earned a Ph.D in chemistry, worked as a chemist for many years before starting his own running shop and mail order business. He's been married for something close to sixty years and raised a family just as people who don't run every day for years do. Peple who know him, and I do a tiny bit, find him good company. Where in all of this do you see impairment of normal functioning?
All very compelling -- to a thinking person. "John Utah" has already enlightened the group to the fact that he thinks all the answers are in the Bible. People like that aren't usually big on even considering facts, much less prepared to objectively evaluate them.