@dbf, yeah 200 miles wasn’t mistyped. It is a point to point race called LOTOJA going from Logan, Utah to Jackson, Wyoming. It is the longest USAC sanctioned race. It also has a Gran Fondo portion as well.
Here’s a Strava file LOTOJA Route
@Bryce thanks that was essentially what I was thinking, SSB and then doing general build to address the general RR fitness needed to respond to attacks/stay with the group and then climbing RR to address the three “big” climbs which should also address the sustained power needed for a really long event.