lmb wrote:
Substitute teach.
I did a lot of that. Teaching, not just subbing, was a very common runner's job in the amateur years. You had regular hours, were done with work by mid afternoon which meant that even in winter you could do your main run in daylight. Weekends were free so you could race and do long runs without work getting in the way.
Bill Baillie eventually took up taxi driving in the late bits of his running career because taxi drivers generally can choose their own hours. I did the same thing as Baillie and found that to be true but the money wasn't all that good for me, Baillie did quite well.
I worked for many years as a counselor in mental health clinics and that worked very well for running. The hours were 9 to 5, I could get a run in at the lunch hour and another after work at 5:00 and like teaching, the weekends were free. You'd need a graduate degree to do that nearly everywhere. But I think any 9 to 5 kind of office job where you're really working only those hours would be a good fit.
I'd also add that a job where you can run back and forth from work would also be a good fit for a serious runner unless the actual work was exhausting, damaging, too much time standing around, etc.