Nice run kat! I don't think that was too slow at all. It makes sense to me that the long runs are about building miles, which means taking it plenty easy, and speedwork is speedwork.
Ditto. Most runs and most miles should be slow and easy. There is no shame in walking...none at all. I walked a little bit on my run today. When easy and long runs are kept easy, then you'll be better recovered to have truly quality speed work sessions.