Real LifeTM having got in the way, it's looking like my next will be either the Denmead 300K or Sheilla Simpson's Plains 300K on April 26th. A bit of a pain as my last long ride was March 1st, so I'll be doing my first 300K in approx 20 years after almost two months of nothing longer than 50K, and on a new, bigger frame that I'm still adjusting myself to.
It'll be interesting, anyway, but a fairly high risk strategy on month 10 of my RRTY (where my strategy to date has been to get one in as early in the month as possible to give time to recover in case of problems).