Just opened up the latest (Sept. - Oct.) issue of Road Bike Action, and on page 116 is an article called "going the Distance" with 10 tips to help you on a Double Century.
Nothing really amazing, but good general info and advice. Planet Ultra folks Deb and Brian Bowling assisted with the article, so no surprise that the Spring Solvang Double is "crown jewel" of the CA Double Century (they don't say Triple Crown) series.
Well, yes, it is a great double, but not sure what puts Solvang above some of the others, even Planet Ultra others (I like Eastern Sierra better, but that's just me).
Bruce Gordon BLT, Cannondale parts bike, Ecodyne recumbent trike, Counterpoint Opus 2, miyata 1000
They may be avoiding the "Triple Crown" term to avoid crediting Chuck Bramwell who manages it. And why avoid Chuck? He is a leader in the Ultra Marathon Cycling Association and many "road racers" do not consider the UMCA people to be "Real" racers.