Well, epic for me. My wife is out of town so our two entries to Foxy's Fall Century (/100K) are going unused. I've concluded that the 5 hr R/T just isn't worth it since I would be rushing to get back at a reasonable time to feed horses. There is a nice club ride, 54 miles/5000' of climbing or so, but the average pace seems to imply a bit of waiting around. So I've mapped out what I think will be the toughest 100K I've ever done, not having done many long rides on a single. Wish me luck!
http://ridewithgps.com/routes/1818602/elevation_profile

These roads at least have some traffic so if you go down someone might come along to collect the remains. This ride is on the east side of our valley; there is fabulous riding in the west side hills, but I don't have enough familiarity to map out a solo effort. In 3 weeks or so my son will be sufficiently recovered from his post-crash surgery to start riding and will do some exploring in that area at what I'm hoping will be a reasonable pace.