I run a lot and I found these earphones the a couple of months ago and thought I would try it out. They claimed their earbuds never fall out. Dang were they right; I was pretty amazed! Anyway, now they’re my go-to running earphones.
If you want to check them out, they’re at yurbuds.com
I’m not affiliated with them in any way, but I think they’re definitely worth looking into in you run often!