So by default it’s not available through UI navigation in any way? From the link, it seems intended to be similar to the Latest and Top pages, and I can totally understand why that would cause confusion. Why not include it in the user’s Activity section instead, where the secondary dropdown lets you pick things like topics and replies? Just add an option called “Recently Read”. It is specific to the user’s activity after all.
That said, the read page isn’t quite the same as my proposal. The main difference being that I want to get back to the current post I’m viewing, not the next unread post in the topic. This is an important distinction, as I may be revisiting a post (perhaps from a link) in the middle of a topic I’ve already read. In that case, the Read page would be useless.
If my proposal isn’t worth it, getting the Recently Read option added to the Activity dropdown would be better than nothing though.