Me too! I plan 1 or 2 more of these before my goal marathon.

I've done a 50k while training for a marathon (7 weeks out) and ran a PR. This year I did a 50 miler (which was an end in and of itself and not part of the training) and used that as a base for my marathon training. No plans for anything over 30 miles between now and my goal race though. Hopefully it leads to PRs for both of us.