Parking here for future reference.
Pennsylvania Triple Crown of Trail Running:
https://patriplecrown.com/the-races/. To complete it you finish the Hyner 50k (April), Worlds End 100k (June), and Eastern States (August) in the same calendar year. All with a ton of climbing/descending. Maybe in a couple of years, if I hit marathon goals.
Run the Perimeter:
https://www.racetheperimeter.com/about. A solo or team race around the border of DC. Would be fun to organize a team and try to win.
Miwok 100k:
https://miwok100k.com/. Looks beautiful and fun, and it'd be neat to do as part of a West Coast trip.