True in the end, it's only you that your accomplishments matter.
As for your coach/trainer: Ok, he's a coach/trainer and he gets paid? He runs a business then. He is not really running it as a top performing coach, which truly does mean inspiring and motivating all his clients. It means crediting all the people whom he serves.
Think of yourself to him, as a client. Your hubby is ..probably your real unpaid, top coach (maybe not as expert).
That's what a real inspiring teacher/coach is....every student feels accomplished and motivated often and into the future. That is teaching excellence.
Wouldn't expect that he would acknowledge 2nd finisher unless he acknowledges 3rd finisher, etc. And his website, it would be cool for everyone if there were names. If he says it's too much effort, tell him that for the annual run in Vancouver, they publish names for over 40,000 participants and their individual run times in the newspaper. (I think it's over 10 kms., 15 kms. I don't jog..)
Perhaps hubby can talk up this suggestion in his own way to this coach.
But yes, how you feel about yourself is the most important thing of all for your own well-being.