In Andrew Gillies’ book, Conference Interpreting: A Student’s Practice Book, one of the first pieces of advice he gives is to work into your strongest language when practicing. For me, that means I should practice interpreting Japanese into English, not the other way around (which I have always found to be easier).
With that in mind, I have been looking for material that is suitable for practicing interpretation. Gillies goes on to explain that such material should have a narrative and be of a reasonable length without being overly technical (at least in the beginning). He adds that news broadcasts are about the worst thing you could chose because they change topics approximately every 90 seconds. Since that is almost all I listen to, I went in search of some real speeches in Japanese.
I was able to find this site which has the script from several speeches made by Prime Minister Abe, along with their English translation. A few even have the video of the speech, which makes them ideal for practicing.
So far, this is the best resource I have come up with. If anyone finds others, please share them.