IBA is the acronym for Iron Butt Association and it’s a club for long distance riders. The’re promoting some extreme trips  like the l’Iron Butt Rally (11,000 miles in 11 days) or the Bun Burner Gold (1,500 miles in 24 hours), something to be proud of and worth a stricker on the tank.
This couldn’be more far from my way of travelling, but nevertheless interesting.
They also provide some pills of wisdom you better read before trying any IBA tour, like:

Avoid adding accessories or doing maintenance immediately before a trip

Link to Iron Butt Association