What is "ragbrai"

RAGBRAI is an acronym and registered trademark for the Register's Annual Great Bicycle Ride Across Iowa, which is a non-competitive bicycle ride organized by The Des Moines Register and going from west to east across the U.S. state of Iowa, that draws recreational riders from across the United States and many foreign countries. First held in 1973, RAGBRAI is the largest bike-touring event in the world.