Gravel Monuments

What are considered to be the Monuments of gravel racing?

I've got Dirty Kanza, LandRun, Gravel Worlds, Trans Iowa, and OGRE in mind, but I have relatively limited geographic exposure and haven't been in the gravel scene for too long.

There should probably only be 1 per state max, and they should all each have a bit of history and good participation.

For Minnesota, the Almanzo is probably considered the state's first and foremost: http://www.almanzo100.bike/

Long history, grass-roots (still free postcard race), widely (and wildly) attended.

The 'monuments' in my part of the world:

Idaho: 
Rebecca's Private Idaho
JayP's Gravel Pursuit

Wyoming: 
Rattlesnake Rally

Utah:
Crusher in the Tushar

Dirty Kanza \nLand Run \nRebecca's Private Idaho \nAlmanzo \nTrans Iowa \nBarry Roubaix \nHill-Billy Roubaix \nGold Rush Bike Rally \nIron Cross \nD2R2 \nCrusher in the Tushar

Another Minnesota ride I'm going to try next year is the DAMn (Day Across Minnesota). 240 miles. Their first year and it sold out.

http://the-damn.com

"The five oldest, longest and most prestigious one-day races in professional cycling are grouped together under the heading ‘Monuments’." \n \nThere can be more than one per state, after all, Belgium has two monuments(albeit one in Flanders and one in Wallonia). \nThe key part is that they are some of the longest running races and they attract a very strong field. \nI think we should limit to one day races too, since multiday rides are such a different type of race, and attract far smaller fields. \n