So the longer the better but really anything under 3 hours isn't worth calling it an endurance race.

I ask because now that I'm chairing the Club Race program in the Indy Region I'm brainstorming with the rest of our Club Race board to come up new/better ideas for races. We had been offering a one hour "enduro" the last few seasons and participation in them has run off a cliff. I've also noticed other regions offering the same thing have been seeing similar results. My initial thought has been a 3 hour enduro as we could run it as part of a regional weekend program.

Any thoughts?