Welcome Natasha!
If you're the type too that likes to see ride profiles in advance, you can use that route archive spreadsheet that Paul mentioned before (again:
https://docs.google.com/spreadsheets/d/1LO6FfMJeMP_cvnEUtCfBvpmVudLNzWH-dRVv_PWqLqQ) since backloaded and "omfg does the climbing ever lighten up???" may be more difficult for some than frontloaded. Davis Rando rides tend to be some of the flattest given the nature of the Sacto/Davis terrain. Personally I don't like to know the ride profiles as otherwise I'd probably never show up for rides I don't already know as I kinda prefer to suffer and learn the hard way. You don't want to have a ride that's too much climbing so you DNF based on time though.
Don't worry about DNF'ing as all of us have been there too, multiple times for various reasons (including, but not limited to, bikes breaking in half, mechanicals, loss of motivation, crashes, too tired, massive thunderstorms). No pressure and no one cares. Just make sure to tell the DORC and get back safely. Rob won't ban you for any DNF/DNS. We're all adults here (at least in physical ages).
Keep in mind that a lot of the climbing is the "death by a thousand climbs" for anything along the coast and not repeats of Tam, Diablo, Hamilton, or Umunhum.
Or you could just blindly cannonball into brevets like Ioannis Sarkas (Hamilton 200k) and I (Faultline 200k) did!
If you're a "full value rider" as it's called, Kitty Goursolle and Sandra Myers are great people to ride with (and in general are great people!) and have been around for a long time.
There is also the Permanents program (
https://rusa.org/pages/permanents) which may have less pressure than a brevet with it being on your own schedule, but still time limits. You can do a permanent with other RUSA members who are also registered for the same permanent on the same day. Those, like worker rides, are important to stick together if there's more than 1 of you because you should stick together for safety reasons. Dan Pannell (who is much faster than me) told me once "What's the point (of not sticking together) as otherwise we're just doing our own individual rides?"
Just remember that this is supposed to be FUN. Type 2 fun, but still fun! For me that's the spirit of randonneuring where we push ourselves and don't take it too seriously. After all, this isn't a job.
Happy to ride with you sometime too outside of rando rides! Let me know.
Kelley